./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_hash_table_get_entry_count_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 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:05:16,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:05:16,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:05:16,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:05:16,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:05:16,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:05:16,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:05:16,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:05:16,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:05:16,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:05:16,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:05:16,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:05:16,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:05:16,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:05:16,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:05:16,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:05:16,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:05:16,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:05:16,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:05:16,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:05:16,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:05:16,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:05:16,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:05:16,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:05:16,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:05:16,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:05:16,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:05:16,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:05:16,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:05:16,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:05:16,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:05:16,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:05:16,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:05:16,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:05:16,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:05:16,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:05:16,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:05:16,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:05:16,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:05:16,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:05:16,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:05:16,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:05:16,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:05:16,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:05:16,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:05:16,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:05:16,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:05:16,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:05:16,527 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:05:16,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:05:16,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:05:16,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:05:16,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:05:16,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:05:16,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:05:16,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:05:16,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:05:16,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:05:16,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:05:16,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:05:16,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2021-11-05 13:05:16,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:05:16,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:05:16,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:05:16,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:05:16,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:05:16,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-05 13:05:16,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef998892/3c462289eb01472c9d2dc4bec95f135c/FLAGaa6167110 [2021-11-05 13:05:17,592 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:05:17,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-05 13:05:17,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef998892/3c462289eb01472c9d2dc4bec95f135c/FLAGaa6167110 [2021-11-05 13:05:17,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef998892/3c462289eb01472c9d2dc4bec95f135c [2021-11-05 13:05:17,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:05:17,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:05:17,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:05:17,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:05:17,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:05:17,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:05:17" (1/1) ... [2021-11-05 13:05:17,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78125d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:17, skipping insertion in model container [2021-11-05 13:05:17,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:05:17" (1/1) ... [2021-11-05 13:05:17,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:05:18,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:05:18,293 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_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-05 13:05:18,303 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_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-05 13:05:18,335 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:05:18,343 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:05:19,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:05:19,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:05:19,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:05:19,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:05:19,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:05:19,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:05:19,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:05:19,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:05:19,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:05:19,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:05:19,433 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:05:19,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,760 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,761 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:05:19,858 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:05:19,884 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_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-05 13:05:19,886 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_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-05 13:05:19,887 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:05:19,888 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:05:19,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:19,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:05:19,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:05:19,937 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:05:19,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:05:19,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:05:19,941 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:05:19,941 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:05:19,942 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:05:19,942 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:05:19,943 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:05:19,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:05:20,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:20,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:05:20,354 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:05:20,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20 WrapperNode [2021-11-05 13:05:20,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:05:20,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:05:20,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:05:20,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:05:20,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:05:20,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:05:20,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:05:20,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:05:20,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:05:20,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:05:20,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:05:20,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:05:20,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (1/1) ... [2021-11-05 13:05:20,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:05:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:20,683 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) [2021-11-05 13:05:20,713 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 [2021-11-05 13:05:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 13:05:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:05:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:05:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:05:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:05:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:05:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:05:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:05:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:05:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:05:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:05:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:05:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:05:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:05:27,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:05:27,821 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-05 13:05:27,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:05:27 BoogieIcfgContainer [2021-11-05 13:05:27,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:05:27,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:05:27,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:05:27,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:05:27,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:05:17" (1/3) ... [2021-11-05 13:05:27,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e8f4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:05:27, skipping insertion in model container [2021-11-05 13:05:27,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:20" (2/3) ... [2021-11-05 13:05:27,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e8f4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:05:27, skipping insertion in model container [2021-11-05 13:05:27,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:05:27" (3/3) ... [2021-11-05 13:05:27,829 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2021-11-05 13:05:27,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:05:27,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-05 13:05:27,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:05:27,873 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 [2021-11-05 13:05:27,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-05 13:05:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 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) [2021-11-05 13:05:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:05:27,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:27,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:27,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2070018022, now seen corresponding path program 1 times [2021-11-05 13:05:27,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:27,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092426426] [2021-11-05 13:05:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:27,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:28,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:28,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092426426] [2021-11-05 13:05:28,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092426426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:28,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:28,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:05:28,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105089535] [2021-11-05 13:05:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:28,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:05:28,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:05:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:05:28,518 INFO L87 Difference]: Start difference. First operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:28,547 INFO L93 Difference]: Finished difference Result 172 states and 219 transitions. [2021-11-05 13:05:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:05:28,549 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 13:05:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:28,556 INFO L225 Difference]: With dead ends: 172 [2021-11-05 13:05:28,556 INFO L226 Difference]: Without dead ends: 82 [2021-11-05 13:05:28,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:05:28,563 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:28,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:05:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-05 13:05:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-05 13:05:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 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) [2021-11-05 13:05:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2021-11-05 13:05:28,600 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 41 [2021-11-05 13:05:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:28,601 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2021-11-05 13:05:28,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2021-11-05 13:05:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:05:28,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:28,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:28,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:05:28,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 584946138, now seen corresponding path program 1 times [2021-11-05 13:05:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:28,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465215528] [2021-11-05 13:05:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:28,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:28,696 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:05:28,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283690964] [2021-11-05 13:05:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:28,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:28,699 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) [2021-11-05 13:05:28,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:05:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:29,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:05:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:05:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:29,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:05:29,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:29,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465215528] [2021-11-05 13:05:29,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:05:29,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283690964] [2021-11-05 13:05:29,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283690964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:29,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:05:29,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666097165] [2021-11-05 13:05:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:29,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:05:29,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:05:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:29,701 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:29,899 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2021-11-05 13:05:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:05:29,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 13:05:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:29,901 INFO L225 Difference]: With dead ends: 208 [2021-11-05 13:05:29,901 INFO L226 Difference]: Without dead ends: 148 [2021-11-05 13:05:29,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.81ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:05:29,903 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 144 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.45ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:29,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 457 Invalid, 39 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 122.45ms Time] [2021-11-05 13:05:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-05 13:05:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2021-11-05 13:05:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 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) [2021-11-05 13:05:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-11-05 13:05:29,910 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 41 [2021-11-05 13:05:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:29,911 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-11-05 13:05:29,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-11-05 13:05:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:05:29,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:29,912 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] [2021-11-05 13:05:29,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:05:30,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:30,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 976385498, now seen corresponding path program 1 times [2021-11-05 13:05:30,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:30,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646645288] [2021-11-05 13:05:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:30,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:30,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:30,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646645288] [2021-11-05 13:05:30,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646645288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:30,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:30,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:05:30,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009109488] [2021-11-05 13:05:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:30,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:05:30,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:05:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:05:30,630 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-05 13:05:32,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:34,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:35,653 INFO L93 Difference]: Finished difference Result 184 states and 214 transitions. [2021-11-05 13:05:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:05:35,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-11-05 13:05:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:35,655 INFO L225 Difference]: With dead ends: 184 [2021-11-05 13:05:35,655 INFO L226 Difference]: Without dead ends: 134 [2021-11-05 13:05:35,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 505.85ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:05:35,656 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 284 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4379.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4666.29ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:35,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 415 Invalid, 103 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 4666.29ms Time] [2021-11-05 13:05:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-05 13:05:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2021-11-05 13:05:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 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) [2021-11-05 13:05:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2021-11-05 13:05:35,664 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 45 [2021-11-05 13:05:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:35,664 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2021-11-05 13:05:35,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-05 13:05:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2021-11-05 13:05:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:05:35,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:35,666 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] [2021-11-05 13:05:35,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:05:35,666 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash -829052836, now seen corresponding path program 1 times [2021-11-05 13:05:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728594971] [2021-11-05 13:05:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:35,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:35,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:35,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728594971] [2021-11-05 13:05:35,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728594971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:35,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:35,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385658875] [2021-11-05 13:05:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:35,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:35,918 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-05 13:05:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:36,010 INFO L93 Difference]: Finished difference Result 181 states and 213 transitions. [2021-11-05 13:05:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:36,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-11-05 13:05:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:36,011 INFO L225 Difference]: With dead ends: 181 [2021-11-05 13:05:36,012 INFO L226 Difference]: Without dead ends: 107 [2021-11-05 13:05:36,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:36,013 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.87ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:36,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 169 Invalid, 20 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 61.87ms Time] [2021-11-05 13:05:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-05 13:05:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-05 13:05:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 106 states have internal predecessors, (122), 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) [2021-11-05 13:05:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-05 13:05:36,018 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 45 [2021-11-05 13:05:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:36,018 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-05 13:05:36,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-05 13:05:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-05 13:05:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 13:05:36,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:36,024 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] [2021-11-05 13:05:36,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:05:36,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 99946677, now seen corresponding path program 1 times [2021-11-05 13:05:36,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:36,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007525122] [2021-11-05 13:05:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:36,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:36,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:36,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007525122] [2021-11-05 13:05:36,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007525122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:36,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:36,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:05:36,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088140405] [2021-11-05 13:05:36,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:36,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:05:36,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:36,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:05:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:36,334 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 13:05:38,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:40,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:41,106 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2021-11-05 13:05:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:05:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2021-11-05 13:05:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:41,109 INFO L225 Difference]: With dead ends: 178 [2021-11-05 13:05:41,109 INFO L226 Difference]: Without dead ends: 108 [2021-11-05 13:05:41,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 338.43ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:05:41,110 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 70 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4211.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4515.07ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:41,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 241 Invalid, 52 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 4515.07ms Time] [2021-11-05 13:05:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-05 13:05:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-05 13:05:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 106 states have internal predecessors, (120), 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) [2021-11-05 13:05:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-11-05 13:05:41,124 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 47 [2021-11-05 13:05:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-11-05 13:05:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 13:05:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-11-05 13:05:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 13:05:41,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:41,127 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] [2021-11-05 13:05:41,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:05:41,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash -416077786, now seen corresponding path program 1 times [2021-11-05 13:05:41,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:41,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912420229] [2021-11-05 13:05:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:41,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:41,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:41,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912420229] [2021-11-05 13:05:41,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912420229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:41,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:41,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:41,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845668045] [2021-11-05 13:05:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:41,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:41,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:41,948 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-05 13:05:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:42,104 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2021-11-05 13:05:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2021-11-05 13:05:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:42,106 INFO L225 Difference]: With dead ends: 193 [2021-11-05 13:05:42,106 INFO L226 Difference]: Without dead ends: 107 [2021-11-05 13:05:42,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:42,107 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 2 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.57ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:42,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 247 Invalid, 27 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 107.57ms Time] [2021-11-05 13:05:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-05 13:05:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-11-05 13:05:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.108910891089109) internal successors, (112), 103 states have internal predecessors, (112), 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) [2021-11-05 13:05:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-11-05 13:05:42,116 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 48 [2021-11-05 13:05:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:42,116 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-11-05 13:05:42,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-05 13:05:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-11-05 13:05:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 13:05:42,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:42,117 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] [2021-11-05 13:05:42,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:05:42,120 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1407256250, now seen corresponding path program 1 times [2021-11-05 13:05:42,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:42,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907898443] [2021-11-05 13:05:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:42,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:42,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:05:42,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882279412] [2021-11-05 13:05:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:42,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:42,199 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) [2021-11-05 13:05:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:05:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:44,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-05 13:05:44,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:05:44,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:05:44,886 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:05:44,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:05:45,754 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:05:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:05:46,478 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:05:46,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:05:47,731 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-05 13:05:47,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-05 13:05:48,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-05 13:05:48,777 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:05:48,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-05 13:05:50,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-05 13:06:07,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:06:07,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:06:08,192 INFO L354 Elim1Store]: treesize reduction 164, result has 28.4 percent of original size [2021-11-05 13:06:08,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 101 treesize of output 145 [2021-11-05 13:06:08,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2021-11-05 13:06:08,790 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:06:08,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2021-11-05 13:06:08,848 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:06:08,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 48 [2021-11-05 13:06:15,814 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-05 13:06:15,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 88 [2021-11-05 13:06:15,864 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:06:15,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 64 [2021-11-05 13:06:15,913 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:06:15,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2021-11-05 13:06:20,736 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-05 13:06:20,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2021-11-05 13:06:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:20,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:20,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:20,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907898443] [2021-11-05 13:06:20,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:20,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882279412] [2021-11-05 13:06:20,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882279412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:20,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:20,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 13:06:20,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853303341] [2021-11-05 13:06:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:20,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 13:06:20,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 13:06:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2021-11-05 13:06:20,921 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2021-11-05 13:06:22,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:33,844 WARN L230 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-11-05 13:06:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:33,984 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-05 13:06:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:06:33,984 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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 54 [2021-11-05 13:06:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:33,985 INFO L225 Difference]: With dead ends: 140 [2021-11-05 13:06:33,985 INFO L226 Difference]: Without dead ends: 138 [2021-11-05 13:06:33,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 22493.29ms TimeCoverageRelationStatistics Valid=59, Invalid=319, Unknown=2, NotChecked=0, Total=380 [2021-11-05 13:06:33,986 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 97 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2161.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 2281.78ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:33,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 681 Invalid, 140 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 1 Unknown, 107 Unchecked, 2281.78ms Time] [2021-11-05 13:06:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-05 13:06:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2021-11-05 13:06:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 114 states have internal predecessors, (124), 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) [2021-11-05 13:06:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2021-11-05 13:06:34,005 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 54 [2021-11-05 13:06:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:34,005 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2021-11-05 13:06:34,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2021-11-05 13:06:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2021-11-05 13:06:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 13:06:34,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:34,006 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] [2021-11-05 13:06:34,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:06:34,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-05 13:06:34,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2107629346, now seen corresponding path program 1 times [2021-11-05 13:06:34,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:34,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433389166] [2021-11-05 13:06:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:34,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:34,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:34,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837396444] [2021-11-05 13:06:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:34,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:34,298 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) [2021-11-05 13:06:34,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:06:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:34,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 13:06:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:35,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:35,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:35,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433389166] [2021-11-05 13:06:35,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:35,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837396444] [2021-11-05 13:06:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837396444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:35,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:35,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:06:35,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514129542] [2021-11-05 13:06:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:35,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:06:35,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:06:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:06:35,233 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 13:06:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:35,641 INFO L93 Difference]: Finished difference Result 255 states and 271 transitions. [2021-11-05 13:06:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:06:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-11-05 13:06:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:35,642 INFO L225 Difference]: With dead ends: 255 [2021-11-05 13:06:35,642 INFO L226 Difference]: Without dead ends: 145 [2021-11-05 13:06:35,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 206.65ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:06:35,644 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 74 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:35,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 625 Invalid, 60 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 269.26ms Time] [2021-11-05 13:06:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-05 13:06:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2021-11-05 13:06:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 81 states have internal predecessors, (85), 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) [2021-11-05 13:06:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2021-11-05 13:06:35,662 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 56 [2021-11-05 13:06:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:35,662 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2021-11-05 13:06:35,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 13:06:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2021-11-05 13:06:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:06:35,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:35,664 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] [2021-11-05 13:06:35,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 13:06:35,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:35,879 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1934306021, now seen corresponding path program 1 times [2021-11-05 13:06:35,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:35,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660648713] [2021-11-05 13:06:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:35,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:35,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:35,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905330046] [2021-11-05 13:06:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:35,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:35,972 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) [2021-11-05 13:06:36,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:06:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:38,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 175 conjunts are in the unsatisfiable core [2021-11-05 13:06:38,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:38,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:06:38,633 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:06:38,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:06:39,417 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:06:39,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:06:40,169 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:06:40,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:06:41,252 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-05 13:06:41,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-05 13:06:42,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-05 13:06:42,319 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:06:42,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-05 13:06:43,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-05 13:07:03,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:03,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:03,354 INFO L354 Elim1Store]: treesize reduction 164, result has 24.4 percent of original size [2021-11-05 13:07:03,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 101 treesize of output 133 [2021-11-05 13:07:04,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2021-11-05 13:07:04,244 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:07:04,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 91 [2021-11-05 13:07:04,299 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:07:04,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 60 [2021-11-05 13:07:11,657 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-05 13:07:11,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 96 [2021-11-05 13:07:11,715 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:07:11,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 72 [2021-11-05 13:07:11,774 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:07:11,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 57 [2021-11-05 13:07:17,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-05 13:07:17,636 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-05 13:07:17,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-05 13:07:17,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-05 13:07:18,269 INFO L354 Elim1Store]: treesize reduction 276, result has 17.1 percent of original size [2021-11-05 13:07:18,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 156 treesize of output 188 [2021-11-05 13:07:18,338 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-05 13:07:18,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 171 [2021-11-05 13:07:18,407 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-05 13:07:18,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 152 [2021-11-05 13:07:19,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 43 [2021-11-05 13:07:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:19,810 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-05 13:07:19,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 57 [2021-11-05 13:07:28,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 117 [2021-11-05 13:07:29,138 INFO L354 Elim1Store]: treesize reduction 511, result has 14.4 percent of original size [2021-11-05 13:07:29,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 150 [2021-11-05 13:07:29,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 138 [2021-11-05 13:07:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:07:29,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:07:29,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:07:29,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660648713] [2021-11-05 13:07:29,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:07:29,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905330046] [2021-11-05 13:07:29,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905330046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:07:29,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:07:29,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 13:07:29,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089839936] [2021-11-05 13:07:29,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:07:29,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 13:07:29,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:07:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 13:07:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=291, Unknown=3, NotChecked=0, Total=342 [2021-11-05 13:07:29,816 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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) [2021-11-05 13:07:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:07:29,985 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-11-05 13:07:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 13:07:29,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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 57 [2021-11-05 13:07:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:07:29,986 INFO L225 Difference]: With dead ends: 104 [2021-11-05 13:07:29,986 INFO L226 Difference]: Without dead ends: 102 [2021-11-05 13:07:29,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 17730.24ms TimeCoverageRelationStatistics Valid=52, Invalid=325, Unknown=3, NotChecked=0, Total=380 [2021-11-05 13:07:29,987 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 55 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 91.82ms IncrementalHoareTripleChecker+Time [2021-11-05 13:07:29,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 670 Invalid, 187 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 164 Unchecked, 91.82ms Time] [2021-11-05 13:07:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-05 13:07:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2021-11-05 13:07:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 75 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) [2021-11-05 13:07:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-11-05 13:07:29,997 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 57 [2021-11-05 13:07:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:07:29,998 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-11-05 13:07:29,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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) [2021-11-05 13:07:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-11-05 13:07:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:07:29,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:07:29,999 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] [2021-11-05 13:07:30,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 13:07:30,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:07:30,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:07:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:07:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 333267831, now seen corresponding path program 1 times [2021-11-05 13:07:30,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:07:30,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087232291] [2021-11-05 13:07:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:07:30,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:07:30,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:07:30,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546068241] [2021-11-05 13:07:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:07:30,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:07:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:07:30,321 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) [2021-11-05 13:07:30,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:07:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:07:32,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-05 13:07:32,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:07:32,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:07:33,418 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:07:33,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:07:34,583 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:07:34,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:07:35,645 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:07:35,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:07:36,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:36,895 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-05 13:07:36,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-05 13:07:37,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-05 13:07:37,992 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:07:37,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-05 13:07:59,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:07:59,570 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-05 13:07:59,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-05 13:08:00,781 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:08:00,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-05 13:08:01,326 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:08:01,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-05 13:08:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:08:02,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:08:02,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:08:02,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087232291] [2021-11-05 13:08:02,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:08:02,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546068241] [2021-11-05 13:08:02,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546068241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:08:02,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:08:02,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 13:08:02,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533044083] [2021-11-05 13:08:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:08:02,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 13:08:02,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:08:02,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 13:08:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:08:02,319 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 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) [2021-11-05 13:08:04,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:06,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:08,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:08:10,239 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2021-11-05 13:08:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:08:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 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 61 [2021-11-05 13:08:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:08:10,241 INFO L225 Difference]: With dead ends: 105 [2021-11-05 13:08:10,241 INFO L226 Difference]: Without dead ends: 96 [2021-11-05 13:08:10,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3035.17ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:08:10,241 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 161 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6502.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 6972.66ms IncrementalHoareTripleChecker+Time [2021-11-05 13:08:10,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 591 Invalid, 233 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 3 Unknown, 99 Unchecked, 6972.66ms Time] [2021-11-05 13:08:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-05 13:08:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2021-11-05 13:08:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 83 states have internal predecessors, (87), 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) [2021-11-05 13:08:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2021-11-05 13:08:10,250 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 61 [2021-11-05 13:08:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:08:10,250 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2021-11-05 13:08:10,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 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) [2021-11-05 13:08:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2021-11-05 13:08:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:08:10,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:08:10,251 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] [2021-11-05 13:08:10,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:08:10,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-05 13:08:10,452 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:08:10,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:08:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1712829942, now seen corresponding path program 1 times [2021-11-05 13:08:10,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:08:10,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343381751] [2021-11-05 13:08:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:08:10,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:08:10,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:08:10,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205917312] [2021-11-05 13:08:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:08:10,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:08:10,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:08:10,507 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) [2021-11-05 13:08:10,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:08:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:08:12,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-05 13:08:12,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:08:12,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:08:13,337 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:08:13,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:08:14,549 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:08:14,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:08:15,518 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:08:15,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:08:16,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:08:16,655 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-05 13:08:16,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-05 13:08:17,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-05 13:08:17,727 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:08:17,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-05 13:08:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:08:35,749 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-05 13:08:35,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-05 13:08:37,156 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:08:37,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-11-05 13:08:37,908 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:08:37,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-05 13:08:38,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-05 13:08:38,935 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-05 13:08:38,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2021-11-05 13:08:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:08:39,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:08:39,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:08:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343381751] [2021-11-05 13:08:39,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:08:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205917312] [2021-11-05 13:08:39,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205917312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:08:39,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:08:39,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 13:08:39,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199777722] [2021-11-05 13:08:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:08:39,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 13:08:39,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:08:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 13:08:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-05 13:08:39,943 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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) [2021-11-05 13:08:42,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:44,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:46,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:48,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:50,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:08:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:08:53,481 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-11-05 13:08:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 13:08:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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 64 [2021-11-05 13:08:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:08:53,483 INFO L225 Difference]: With dead ends: 105 [2021-11-05 13:08:53,483 INFO L226 Difference]: Without dead ends: 96 [2021-11-05 13:08:53,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4937.67ms TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2021-11-05 13:08:53,484 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 183 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10643.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 11295.10ms IncrementalHoareTripleChecker+Time [2021-11-05 13:08:53,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 618 Invalid, 314 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 5 Unknown, 173 Unchecked, 11295.10ms Time] [2021-11-05 13:08:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-05 13:08:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2021-11-05 13:08:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.054054054054054) internal successors, (78), 75 states have internal predecessors, (78), 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) [2021-11-05 13:08:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-11-05 13:08:53,492 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 64 [2021-11-05 13:08:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:08:53,492 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-11-05 13:08:53,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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) [2021-11-05 13:08:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-11-05 13:08:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:08:53,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:08:53,493 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] [2021-11-05 13:08:53,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-05 13:08:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:08:53,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:08:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:08:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1974082857, now seen corresponding path program 1 times [2021-11-05 13:08:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:08:53,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541913446] [2021-11-05 13:08:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:08:53,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:08:53,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:08:53,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774855693] [2021-11-05 13:08:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:08:53,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:08:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:08:53,792 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) [2021-11-05 13:08:53,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15