./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:38:27,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:38:27,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:38:27,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:38:27,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:38:27,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:38:27,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:38:27,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:38:27,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:38:27,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:38:27,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:38:27,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:38:27,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:38:27,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:38:27,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:38:27,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:38:27,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:38:27,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:38:27,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:38:27,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:38:27,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:38:27,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:38:27,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:38:27,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:38:27,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:38:27,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:38:27,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:38:27,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:38:27,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:38:27,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:38:27,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:38:27,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:38:27,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:38:27,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:38:27,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:38:27,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:38:27,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:38:27,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:38:27,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:38:27,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:38:27,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:38:28,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:38:28,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:38:28,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:38:28,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:38:28,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:38:28,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:38:28,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:38:28,038 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:38:28,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:38:28,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:38:28,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:38:28,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:38:28,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:38:28,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:38:28,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:38:28,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:38:28,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:38:28,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:38:28,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:38:28,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:38:28,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:38:28,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:38:28,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:38:28,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:38:28,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:38:28,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2021-11-03 23:38:28,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:38:28,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:38:28,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:38:28,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:38:28,298 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:38:28,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-03 23:38:28,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09cf042/be39d11a10ba42169a6f8efabf6010b6/FLAG378f95495 [2021-11-03 23:38:28,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:38:28,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-03 23:38:29,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09cf042/be39d11a10ba42169a6f8efabf6010b6/FLAG378f95495 [2021-11-03 23:38:29,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09cf042/be39d11a10ba42169a6f8efabf6010b6 [2021-11-03 23:38:29,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:38:29,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:38:29,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:38:29,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:38:29,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:38:29,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:38:29" (1/1) ... [2021-11-03 23:38:29,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3959f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:29, skipping insertion in model container [2021-11-03 23:38:29,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:38:29" (1/1) ... [2021-11-03 23:38:29,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:38:29,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:38:29,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-03 23:38:29,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-03 23:38:29,483 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:38:29,489 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:38:29,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:29,992 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:38:30,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:38:30,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:38:30,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:38:30,207 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:38:30,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:38:30,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:38:30,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:38:30,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:38:30,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:38:30,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:38:30,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,347 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,350 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:38:30,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:38:30,462 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-03 23:38:30,463 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-03 23:38:30,467 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:38:30,469 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:38:30,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,556 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:38:30,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:38:30,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:38:30,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:38:30,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:38:30,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:38:30,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:38:30,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:38:30,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:38:30,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:38:30,580 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:38:30,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:38:30,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:38:30,789 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:38:30,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30 WrapperNode [2021-11-03 23:38:30,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:38:30,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:38:30,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:38:30,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:38:30,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:30,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:38:31,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:38:31,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:38:31,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:38:31,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:38:31,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:38:31,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:38:31,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:38:31,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (1/1) ... [2021-11-03 23:38:31,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:38:31,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:38:31,544 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) [2021-11-03 23:38:31,550 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 [2021-11-03 23:38:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:38:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:38:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:38:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:38:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:38:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:38:36,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:38:36,460 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-03 23:38:36,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:38:36 BoogieIcfgContainer [2021-11-03 23:38:36,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:38:36,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:38:36,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:38:36,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:38:36,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:38:29" (1/3) ... [2021-11-03 23:38:36,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cd3144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:38:36, skipping insertion in model container [2021-11-03 23:38:36,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:38:30" (2/3) ... [2021-11-03 23:38:36,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cd3144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:38:36, skipping insertion in model container [2021-11-03 23:38:36,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:38:36" (3/3) ... [2021-11-03 23:38:36,478 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2021-11-03 23:38:36,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:38:36,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2021-11-03 23:38:36,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:38:36,555 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 [2021-11-03 23:38:36,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2021-11-03 23:38:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 2319 states, 2255 states have (on average 1.4124168514412416) internal successors, (3185), 2318 states have internal predecessors, (3185), 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) [2021-11-03 23:38:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:38:36,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:38:36,655 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] [2021-11-03 23:38:36,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:38:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:38:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -966206977, now seen corresponding path program 1 times [2021-11-03 23:38:36,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:38:36,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672959746] [2021-11-03 23:38:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:38:36,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:38:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:38:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:38:37,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:38:37,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672959746] [2021-11-03 23:38:37,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672959746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:38:37,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:38:37,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:38:37,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055496615] [2021-11-03 23:38:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:38:37,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:38:37,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:38:37,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:38:37,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:38:37,239 INFO L87 Difference]: Start difference. First operand has 2319 states, 2255 states have (on average 1.4124168514412416) internal successors, (3185), 2318 states have internal predecessors, (3185), 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 32.0) internal successors, (64), 2 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) [2021-11-03 23:38:39,309 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 [] [2021-11-03 23:38:49,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:38:49,827 INFO L93 Difference]: Finished difference Result 4632 states and 6363 transitions. [2021-11-03 23:38:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:38:49,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 [2021-11-03 23:38:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:38:49,846 INFO L225 Difference]: With dead ends: 4632 [2021-11-03 23:38:49,847 INFO L226 Difference]: Without dead ends: 2314 [2021-11-03 23:38:49,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:38:49,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11163.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12185.26ms IncrementalHoareTripleChecker+Time [2021-11-03 23:38:49,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2988 Unknown, 0 Unchecked, 29.49ms Time], IncrementalHoareTripleChecker [0 Valid, 2987 Invalid, 1 Unknown, 0 Unchecked, 12185.26ms Time] [2021-11-03 23:38:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-03 23:38:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-03 23:38:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3251888049755665) internal successors, (2983), 2313 states have internal predecessors, (2983), 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) [2021-11-03 23:38:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2983 transitions. [2021-11-03 23:38:49,964 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2983 transitions. Word has length 64 [2021-11-03 23:38:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:38:49,965 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2983 transitions. [2021-11-03 23:38:49,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2021-11-03 23:38:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2983 transitions. [2021-11-03 23:38:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:38:49,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:38:49,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:38:49,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:38:49,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:38:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:38:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1823598091, now seen corresponding path program 1 times [2021-11-03 23:38:49,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:38:49,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830159121] [2021-11-03 23:38:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:38:49,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:38:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:38:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:38:50,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:38:50,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830159121] [2021-11-03 23:38:50,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830159121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:38:50,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:38:50,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:38:50,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737042329] [2021-11-03 23:38:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:38:50,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:38:50,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:38:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:38:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:38:50,352 INFO L87 Difference]: Start difference. First operand 2314 states and 2983 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-03 23:38:52,401 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 [] [2021-11-03 23:39:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:39:07,472 INFO L93 Difference]: Finished difference Result 4548 states and 5861 transitions. [2021-11-03 23:39:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:39:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-11-03 23:39:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:39:07,481 INFO L225 Difference]: With dead ends: 4548 [2021-11-03 23:39:07,481 INFO L226 Difference]: Without dead ends: 2314 [2021-11-03 23:39:07,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:39:07,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4657 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15330.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16608.86ms IncrementalHoareTripleChecker+Time [2021-11-03 23:39:07,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4657 Valid, 0 Invalid, 4264 Unknown, 0 Unchecked, 75.51ms Time], IncrementalHoareTripleChecker [5 Valid, 4258 Invalid, 1 Unknown, 0 Unchecked, 16608.86ms Time] [2021-11-03 23:39:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-03 23:39:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-03 23:39:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3238560639715682) internal successors, (2980), 2313 states have internal predecessors, (2980), 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) [2021-11-03 23:39:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2980 transitions. [2021-11-03 23:39:07,536 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2980 transitions. Word has length 64 [2021-11-03 23:39:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:39:07,536 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2980 transitions. [2021-11-03 23:39:07,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-03 23:39:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2980 transitions. [2021-11-03 23:39:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 23:39:07,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:39:07,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:39:07,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:39:07,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:39:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:39:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 998964115, now seen corresponding path program 1 times [2021-11-03 23:39:07,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:39:07,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560179174] [2021-11-03 23:39:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:39:07,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:39:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:39:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:39:07,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:39:07,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560179174] [2021-11-03 23:39:07,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560179174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:39:07,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:39:07,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:39:07,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296963569] [2021-11-03 23:39:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:39:07,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:39:07,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:39:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:39:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:39:07,872 INFO L87 Difference]: Start difference. First operand 2314 states and 2980 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-03 23:39:09,915 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 [] [2021-11-03 23:39:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:39:34,643 INFO L93 Difference]: Finished difference Result 5246 states and 6723 transitions. [2021-11-03 23:39:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:39:34,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-03 23:39:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:39:34,652 INFO L225 Difference]: With dead ends: 5246 [2021-11-03 23:39:34,653 INFO L226 Difference]: Without dead ends: 2980 [2021-11-03 23:39:34,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.07ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:39:34,657 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6285 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 7164 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24101.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.97ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26155.44ms IncrementalHoareTripleChecker+Time [2021-11-03 23:39:34,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6285 Valid, 0 Invalid, 7183 Unknown, 0 Unchecked, 114.97ms Time], IncrementalHoareTripleChecker [18 Valid, 7164 Invalid, 1 Unknown, 0 Unchecked, 26155.44ms Time] [2021-11-03 23:39:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2021-11-03 23:39:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2314. [2021-11-03 23:39:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.32252332296757) internal successors, (2977), 2313 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:39:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2977 transitions. [2021-11-03 23:39:34,721 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2977 transitions. Word has length 72 [2021-11-03 23:39:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:39:34,722 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2977 transitions. [2021-11-03 23:39:34,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-03 23:39:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2977 transitions. [2021-11-03 23:39:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 23:39:34,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:39:34,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:39:34,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:39:34,723 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:39:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:39:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -984193973, now seen corresponding path program 1 times [2021-11-03 23:39:34,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:39:34,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823685031] [2021-11-03 23:39:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:39:34,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:39:34,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:39:34,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951576748] [2021-11-03 23:39:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:39:34,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:39:34,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:39:34,876 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) [2021-11-03 23:39:34,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:39:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:39:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:39:35,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:39:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:39:36,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:39:36,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:39:36,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823685031] [2021-11-03 23:39:36,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:39:36,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951576748] [2021-11-03 23:39:36,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951576748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:39:36,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:39:36,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:39:36,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163691166] [2021-11-03 23:39:36,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:39:36,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:39:36,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:39:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:39:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:39:36,304 INFO L87 Difference]: Start difference. First operand 2314 states and 2977 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 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) [2021-11-03 23:39:38,346 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 [] [2021-11-03 23:39:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:39:58,009 INFO L93 Difference]: Finished difference Result 5255 states and 6739 transitions. [2021-11-03 23:39:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:39:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 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 88 [2021-11-03 23:39:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:39:58,017 INFO L225 Difference]: With dead ends: 5255 [2021-11-03 23:39:58,017 INFO L226 Difference]: Without dead ends: 3020 [2021-11-03 23:39:58,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 239.66ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:39:58,021 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11991 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19262.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11991 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 97.42ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20999.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:39:58,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11991 Valid, 0 Invalid, 5524 Unknown, 0 Unchecked, 97.42ms Time], IncrementalHoareTripleChecker [17 Valid, 5506 Invalid, 1 Unknown, 0 Unchecked, 20999.64ms Time] [2021-11-03 23:39:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-11-03 23:39:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2314. [2021-11-03 23:39:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3211905819635716) internal successors, (2974), 2313 states have internal predecessors, (2974), 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) [2021-11-03 23:39:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2974 transitions. [2021-11-03 23:39:58,077 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2974 transitions. Word has length 88 [2021-11-03 23:39:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:39:58,077 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2974 transitions. [2021-11-03 23:39:58,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 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) [2021-11-03 23:39:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2974 transitions. [2021-11-03 23:39:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 23:39:58,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:39:58,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:39:58,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 23:39:58,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:39:58,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:39:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:39:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1935115155, now seen corresponding path program 1 times [2021-11-03 23:39:58,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:39:58,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248797427] [2021-11-03 23:39:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:39:58,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:39:58,376 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:39:58,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832456048] [2021-11-03 23:39:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:39:58,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:39:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:39:58,378 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) [2021-11-03 23:39:58,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:39:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:39:59,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:39:59,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:39:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:39:59,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:39:59,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:39:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248797427] [2021-11-03 23:39:59,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:39:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832456048] [2021-11-03 23:39:59,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832456048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:39:59,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:39:59,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:39:59,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873553692] [2021-11-03 23:39:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:39:59,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:39:59,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:39:59,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:39:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:39:59,404 INFO L87 Difference]: Start difference. First operand 2314 states and 2974 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-03 23:40:01,445 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 [] [2021-11-03 23:40:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:40:29,279 INFO L93 Difference]: Finished difference Result 4597 states and 5908 transitions. [2021-11-03 23:40:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:40:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) Word has length 112 [2021-11-03 23:40:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:40:29,285 INFO L225 Difference]: With dead ends: 4597 [2021-11-03 23:40:29,286 INFO L226 Difference]: Without dead ends: 2354 [2021-11-03 23:40:29,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:40:29,290 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 5836 mSDsCounter, 0 mSdLazyCounter, 8954 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27164.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.95ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29419.39ms IncrementalHoareTripleChecker+Time [2021-11-03 23:40:29,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 8992 Unknown, 0 Unchecked, 81.95ms Time], IncrementalHoareTripleChecker [37 Valid, 8954 Invalid, 1 Unknown, 0 Unchecked, 29419.39ms Time] [2021-11-03 23:40:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-11-03 23:40:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2334. [2021-11-03 23:40:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3183619550858652) internal successors, (2994), 2333 states have internal predecessors, (2994), 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) [2021-11-03 23:40:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2994 transitions. [2021-11-03 23:40:29,344 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2994 transitions. Word has length 112 [2021-11-03 23:40:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:40:29,345 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2994 transitions. [2021-11-03 23:40:29,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-03 23:40:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2994 transitions. [2021-11-03 23:40:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 23:40:29,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:40:29,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:40:29,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:40:29,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:40:29,568 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:40:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:40:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1660355541, now seen corresponding path program 1 times [2021-11-03 23:40:29,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:40:29,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944962219] [2021-11-03 23:40:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:40:29,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:40:29,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:40:29,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766276781] [2021-11-03 23:40:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:40:29,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:40:29,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:40:29,644 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) [2021-11-03 23:40:29,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:40:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:40:30,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:40:30,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:40:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:40:30,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:40:30,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:40:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944962219] [2021-11-03 23:40:30,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:40:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766276781] [2021-11-03 23:40:30,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766276781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:40:30,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:40:30,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:40:30,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838052231] [2021-11-03 23:40:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:40:30,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:40:30,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:40:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:40:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:40:30,965 INFO L87 Difference]: Start difference. First operand 2334 states and 2994 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 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) [2021-11-03 23:40:33,004 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 [] [2021-11-03 23:40:59,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:40:59,484 INFO L93 Difference]: Finished difference Result 5311 states and 6797 transitions. [2021-11-03 23:40:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:40:59,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 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) Word has length 112 [2021-11-03 23:40:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:40:59,492 INFO L225 Difference]: With dead ends: 5311 [2021-11-03 23:40:59,492 INFO L226 Difference]: Without dead ends: 3040 [2021-11-03 23:40:59,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 329.62ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:40:59,496 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12189 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 8256 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25387.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 117.42ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 8256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27710.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:40:59,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12189 Valid, 0 Invalid, 8299 Unknown, 0 Unchecked, 117.42ms Time], IncrementalHoareTripleChecker [42 Valid, 8256 Invalid, 1 Unknown, 0 Unchecked, 27710.52ms Time] [2021-11-03 23:40:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-11-03 23:40:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2334. [2021-11-03 23:40:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3170409511228534) internal successors, (2991), 2333 states have internal predecessors, (2991), 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) [2021-11-03 23:40:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2991 transitions. [2021-11-03 23:40:59,549 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2991 transitions. Word has length 112 [2021-11-03 23:40:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:40:59,549 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2991 transitions. [2021-11-03 23:40:59,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 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) [2021-11-03 23:40:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2991 transitions. [2021-11-03 23:40:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 23:40:59,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:40:59,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:40:59,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:40:59,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:40:59,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:40:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:40:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash 485350515, now seen corresponding path program 1 times [2021-11-03 23:40:59,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:40:59,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491365937] [2021-11-03 23:40:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:40:59,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:40:59,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:40:59,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747929376] [2021-11-03 23:40:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:40:59,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:40:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:40:59,841 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) [2021-11-03 23:40:59,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:41:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:41:00,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:41:00,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:41:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:41:01,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:41:01,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:41:01,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491365937] [2021-11-03 23:41:01,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:41:01,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747929376] [2021-11-03 23:41:01,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747929376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:41:01,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:41:01,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:41:01,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523917920] [2021-11-03 23:41:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:41:01,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:41:01,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:41:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:41:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:41:01,509 INFO L87 Difference]: Start difference. First operand 2334 states and 2991 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 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) [2021-11-03 23:41:03,553 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 [] [2021-11-03 23:41:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:41:23,174 INFO L93 Difference]: Finished difference Result 4497 states and 5766 transitions. [2021-11-03 23:41:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:41:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 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) Word has length 128 [2021-11-03 23:41:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:41:23,181 INFO L225 Difference]: With dead ends: 4497 [2021-11-03 23:41:23,182 INFO L226 Difference]: Without dead ends: 2334 [2021-11-03 23:41:23,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.64ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:41:23,186 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8749 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 5977 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19264.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21173.97ms IncrementalHoareTripleChecker+Time [2021-11-03 23:41:23,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8749 Valid, 0 Invalid, 5982 Unknown, 0 Unchecked, 63.46ms Time], IncrementalHoareTripleChecker [4 Valid, 5977 Invalid, 1 Unknown, 0 Unchecked, 21173.97ms Time] [2021-11-03 23:41:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-11-03 23:41:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2021-11-03 23:41:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3157199471598415) internal successors, (2988), 2333 states have internal predecessors, (2988), 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) [2021-11-03 23:41:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2988 transitions. [2021-11-03 23:41:23,241 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2988 transitions. Word has length 128 [2021-11-03 23:41:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:41:23,241 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2988 transitions. [2021-11-03 23:41:23,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 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) [2021-11-03 23:41:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2988 transitions. [2021-11-03 23:41:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-03 23:41:23,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:41:23,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:41:23,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 23:41:23,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:41:23,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:41:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:41:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -451771305, now seen corresponding path program 1 times [2021-11-03 23:41:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:41:23,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531049490] [2021-11-03 23:41:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:41:23,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:41:23,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:41:23,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204806307] [2021-11-03 23:41:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:41:23,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:41:23,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:41:23,554 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) [2021-11-03 23:41:23,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:41:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:41:24,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 23:41:24,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:41:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:41:25,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:41:25,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:41:25,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531049490] [2021-11-03 23:41:25,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:41:25,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204806307] [2021-11-03 23:41:25,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204806307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:41:25,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:41:25,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:41:25,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231127952] [2021-11-03 23:41:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:41:25,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:41:25,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:41:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:41:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:41:25,359 INFO L87 Difference]: Start difference. First operand 2334 states and 2988 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:41:28,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:41:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:41:55,199 INFO L93 Difference]: Finished difference Result 4831 states and 6197 transitions. [2021-11-03 23:41:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:41:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-03 23:41:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:41:55,206 INFO L225 Difference]: With dead ends: 4831 [2021-11-03 23:41:55,206 INFO L226 Difference]: Without dead ends: 2692 [2021-11-03 23:41:55,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 301.04ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:41:55,208 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11739 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 7769 mSolverCounterSat, 79 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26445.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11739 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.37ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29092.37ms IncrementalHoareTripleChecker+Time [2021-11-03 23:41:55,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11739 Valid, 0 Invalid, 7849 Unknown, 0 Unchecked, 105.37ms Time], IncrementalHoareTripleChecker [79 Valid, 7769 Invalid, 1 Unknown, 0 Unchecked, 29092.37ms Time] [2021-11-03 23:41:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-11-03 23:41:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2334. [2021-11-03 23:41:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3117569352708058) internal successors, (2979), 2333 states have internal predecessors, (2979), 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) [2021-11-03 23:41:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2979 transitions. [2021-11-03 23:41:55,268 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2979 transitions. Word has length 136 [2021-11-03 23:41:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:41:55,268 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2979 transitions. [2021-11-03 23:41:55,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:41:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2979 transitions. [2021-11-03 23:41:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-03 23:41:55,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:41:55,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:41:55,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:41:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:41:55,484 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:41:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:41:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 957929247, now seen corresponding path program 1 times [2021-11-03 23:41:55,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:41:55,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107844920] [2021-11-03 23:41:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:41:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:41:55,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:41:55,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926476392] [2021-11-03 23:41:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:41:55,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:41:55,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:41:55,555 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) [2021-11-03 23:41:55,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:41:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:41:56,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 23:41:56,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:41:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:41:56,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:41:56,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:41:56,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107844920] [2021-11-03 23:41:56,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:41:56,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926476392] [2021-11-03 23:41:56,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926476392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:41:56,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:41:56,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:41:56,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370411590] [2021-11-03 23:41:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:41:56,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:41:56,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:41:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:41:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:41:56,923 INFO L87 Difference]: Start difference. First operand 2334 states and 2979 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:41:59,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:42:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:42,051 INFO L93 Difference]: Finished difference Result 11262 states and 14389 transitions. [2021-11-03 23:42:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 23:42:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-03 23:42:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:42,074 INFO L225 Difference]: With dead ends: 11262 [2021-11-03 23:42:42,075 INFO L226 Difference]: Without dead ends: 9028 [2021-11-03 23:42:42,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 308.66ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:42:42,079 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11299 mSDsluCounter, 11761 mSDsCounter, 0 mSdLazyCounter, 14787 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39815.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.01ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 14787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44006.91ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:42,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11299 Valid, 0 Invalid, 14812 Unknown, 0 Unchecked, 108.01ms Time], IncrementalHoareTripleChecker [24 Valid, 14787 Invalid, 1 Unknown, 0 Unchecked, 44006.91ms Time] [2021-11-03 23:42:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9028 states. [2021-11-03 23:42:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9028 to 2344. [2021-11-03 23:42:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2281 states have (on average 1.310828583954406) internal successors, (2990), 2343 states have internal predecessors, (2990), 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) [2021-11-03 23:42:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 2990 transitions. [2021-11-03 23:42:42,196 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 2990 transitions. Word has length 152 [2021-11-03 23:42:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:42,196 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 2990 transitions. [2021-11-03 23:42:42,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:42:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 2990 transitions. [2021-11-03 23:42:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-03 23:42:42,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:42,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:42,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:42:42,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:42:42,409 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:42:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash -36764451, now seen corresponding path program 1 times [2021-11-03 23:42:42,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:42,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980030543] [2021-11-03 23:42:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:42,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:42,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:42:42,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331338913] [2021-11-03 23:42:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:42,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:42:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:42:42,492 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) [2021-11-03 23:42:42,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:42:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:43,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 23:42:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:42:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:44,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:42:44,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:44,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980030543] [2021-11-03 23:42:44,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:42:44,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331338913] [2021-11-03 23:42:44,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331338913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:44,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:44,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:42:44,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032729093] [2021-11-03 23:42:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:44,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:42:44,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:42:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:42:44,033 INFO L87 Difference]: Start difference. First operand 2344 states and 2990 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:42:46,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:43:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:25,587 INFO L93 Difference]: Finished difference Result 6760 states and 8632 transitions. [2021-11-03 23:43:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:43:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-03 23:43:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:25,595 INFO L225 Difference]: With dead ends: 6760 [2021-11-03 23:43:25,595 INFO L226 Difference]: Without dead ends: 4581 [2021-11-03 23:43:25,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 250.22ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:43:25,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5639 mSDsluCounter, 11800 mSDsCounter, 0 mSdLazyCounter, 14789 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36752.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5639 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40764.27ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:25,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5639 Valid, 0 Invalid, 14795 Unknown, 0 Unchecked, 99.51ms Time], IncrementalHoareTripleChecker [5 Valid, 14789 Invalid, 1 Unknown, 0 Unchecked, 40764.27ms Time] [2021-11-03 23:43:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-11-03 23:43:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 2399. [2021-11-03 23:43:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2336 states have (on average 1.3099315068493151) internal successors, (3060), 2398 states have internal predecessors, (3060), 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) [2021-11-03 23:43:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3060 transitions. [2021-11-03 23:43:25,673 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3060 transitions. Word has length 152 [2021-11-03 23:43:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:25,674 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3060 transitions. [2021-11-03 23:43:25,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:43:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3060 transitions. [2021-11-03 23:43:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-03 23:43:25,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:25,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:25,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 23:43:25,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:25,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:43:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1902397595, now seen corresponding path program 1 times [2021-11-03 23:43:25,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:25,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254210065] [2021-11-03 23:43:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:25,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:25,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:25,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768423638] [2021-11-03 23:43:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:25,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:25,944 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:43:25,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 23:43:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:26,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 23:43:26,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:27,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:27,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:27,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254210065] [2021-11-03 23:43:27,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:27,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768423638] [2021-11-03 23:43:27,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768423638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:27,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:27,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:43:27,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812778936] [2021-11-03 23:43:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:27,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:43:27,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:43:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:43:27,224 INFO L87 Difference]: Start difference. First operand 2399 states and 3060 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:43:29,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:44:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:44:24,830 INFO L93 Difference]: Finished difference Result 6740 states and 8606 transitions. [2021-11-03 23:44:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:44:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-03 23:44:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:44:24,839 INFO L225 Difference]: With dead ends: 6740 [2021-11-03 23:44:24,839 INFO L226 Difference]: Without dead ends: 4581 [2021-11-03 23:44:24,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 226.93ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:44:24,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5527 mSDsluCounter, 11802 mSDsCounter, 0 mSdLazyCounter, 14789 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49081.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5527 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 147.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56578.97ms IncrementalHoareTripleChecker+Time [2021-11-03 23:44:24,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5527 Valid, 0 Invalid, 14793 Unknown, 0 Unchecked, 147.88ms Time], IncrementalHoareTripleChecker [3 Valid, 14789 Invalid, 1 Unknown, 0 Unchecked, 56578.97ms Time] [2021-11-03 23:44:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-11-03 23:44:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 2419. [2021-11-03 23:44:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 2356 states have (on average 1.3089983022071308) internal successors, (3084), 2418 states have internal predecessors, (3084), 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) [2021-11-03 23:44:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3084 transitions. [2021-11-03 23:44:24,965 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3084 transitions. Word has length 152 [2021-11-03 23:44:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:44:24,965 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3084 transitions. [2021-11-03 23:44:24,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-03 23:44:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3084 transitions. [2021-11-03 23:44:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-03 23:44:24,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:44:24,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:44:24,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 23:44:25,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 23:44:25,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:44:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:44:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2117810087, now seen corresponding path program 1 times [2021-11-03 23:44:25,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:44:25,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488772596] [2021-11-03 23:44:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:25,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:44:25,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:44:25,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572863594] [2021-11-03 23:44:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:25,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:44:25,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:44:25,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 23:44:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:44:26,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 23:44:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:44:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:44:26,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:44:26,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:44:26,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488772596] [2021-11-03 23:44:26,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:44:26,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572863594] [2021-11-03 23:44:26,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572863594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:44:26,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:44:26,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:44:26,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330677995] [2021-11-03 23:44:26,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:44:26,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:44:26,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:44:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:44:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:44:26,587 INFO L87 Difference]: Start difference. First operand 2419 states and 3084 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-03 23:44:29,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:45:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:02,982 INFO L93 Difference]: Finished difference Result 4598 states and 5867 transitions. [2021-11-03 23:45:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:45:02,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2021-11-03 23:45:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:02,987 INFO L225 Difference]: With dead ends: 4598 [2021-11-03 23:45:02,987 INFO L226 Difference]: Without dead ends: 2354 [2021-11-03 23:45:02,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:45:02,991 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 5684 mSDsCounter, 0 mSdLazyCounter, 8873 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30976.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8873 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35917.78ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:02,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 8874 Unknown, 0 Unchecked, 62.19ms Time], IncrementalHoareTripleChecker [0 Valid, 8873 Invalid, 1 Unknown, 0 Unchecked, 35917.78ms Time] [2021-11-03 23:45:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-11-03 23:45:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2354. [2021-11-03 23:45:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2291 states have (on average 1.3099083369707551) internal successors, (3001), 2353 states have internal predecessors, (3001), 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) [2021-11-03 23:45:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3001 transitions. [2021-11-03 23:45:03,074 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3001 transitions. Word has length 152 [2021-11-03 23:45:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:03,074 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 3001 transitions. [2021-11-03 23:45:03,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-03 23:45:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3001 transitions. [2021-11-03 23:45:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-03 23:45:03,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:03,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:45:03,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 23:45:03,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:03,292 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:45:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1484791415, now seen corresponding path program 1 times [2021-11-03 23:45:03,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:03,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684693846] [2021-11-03 23:45:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:03,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:03,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:03,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005646470] [2021-11-03 23:45:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:03,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:03,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:03,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:45:03,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 23:45:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 23:45:04,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:04,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:04,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:04,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684693846] [2021-11-03 23:45:04,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:04,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005646470] [2021-11-03 23:45:04,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005646470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:04,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:04,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:45:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962047786] [2021-11-03 23:45:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:04,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:45:04,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:45:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:45:04,728 INFO L87 Difference]: Start difference. First operand 2354 states and 3001 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2021-11-03 23:45:07,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:46:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:21,537 INFO L93 Difference]: Finished difference Result 6753 states and 8589 transitions. [2021-11-03 23:46:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:46:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 155 [2021-11-03 23:46:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:21,544 INFO L225 Difference]: With dead ends: 6753 [2021-11-03 23:46:21,544 INFO L226 Difference]: Without dead ends: 4479 [2021-11-03 23:46:21,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.77ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:21,549 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2679 mSDsluCounter, 13758 mSDsCounter, 0 mSdLazyCounter, 19538 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64471.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 144.45ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 19538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75805.85ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:21,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2679 Valid, 0 Invalid, 19585 Unknown, 0 Unchecked, 144.45ms Time], IncrementalHoareTripleChecker [46 Valid, 19538 Invalid, 1 Unknown, 0 Unchecked, 75805.85ms Time] [2021-11-03 23:46:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2021-11-03 23:46:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 2434. [2021-11-03 23:46:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2371 states have (on average 1.3078869675242513) internal successors, (3101), 2433 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3101 transitions. [2021-11-03 23:46:21,643 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3101 transitions. Word has length 155 [2021-11-03 23:46:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:21,643 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 3101 transitions. [2021-11-03 23:46:21,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2021-11-03 23:46:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3101 transitions. [2021-11-03 23:46:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-03 23:46:21,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:21,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:46:21,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:21,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 23:46:21,860 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:46:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1162812939, now seen corresponding path program 1 times [2021-11-03 23:46:21,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:21,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739221438] [2021-11-03 23:46:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:21,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:21,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:21,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857130158] [2021-11-03 23:46:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:21,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:21,924 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:46:21,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 23:46:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:22,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 3339 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:46:22,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:23,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:23,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:23,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739221438] [2021-11-03 23:46:23,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:23,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857130158] [2021-11-03 23:46:23,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857130158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:23,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:23,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:46:23,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636260224] [2021-11-03 23:46:23,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:23,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:46:23,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:23,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:46:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:23,530 INFO L87 Difference]: Start difference. First operand 2434 states and 3101 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-03 23:46:26,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:56,075 INFO L93 Difference]: Finished difference Result 6811 states and 8651 transitions. [2021-11-03 23:47:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:47:56,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 155 [2021-11-03 23:47:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:56,082 INFO L225 Difference]: With dead ends: 6811 [2021-11-03 23:47:56,082 INFO L226 Difference]: Without dead ends: 4456 [2021-11-03 23:47:56,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 420.81ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:47:56,085 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2416 mSDsluCounter, 15064 mSDsCounter, 0 mSdLazyCounter, 24015 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78818.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 191.09ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 24015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91197.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:56,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 0 Invalid, 24091 Unknown, 0 Unchecked, 191.09ms Time], IncrementalHoareTripleChecker [75 Valid, 24015 Invalid, 1 Unknown, 0 Unchecked, 91197.52ms Time] [2021-11-03 23:47:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2021-11-03 23:47:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 2474. [2021-11-03 23:47:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2411 states have (on average 1.3069265864786395) internal successors, (3151), 2473 states have internal predecessors, (3151), 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) [2021-11-03 23:47:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3151 transitions. [2021-11-03 23:47:56,172 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3151 transitions. Word has length 155 [2021-11-03 23:47:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:56,172 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 3151 transitions. [2021-11-03 23:47:56,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-03 23:47:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3151 transitions. [2021-11-03 23:47:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-03 23:47:56,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:56,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:56,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 23:47:56,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 23:47:56,392 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-03 23:47:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash -48290695, now seen corresponding path program 1 times [2021-11-03 23:47:56,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:56,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275640821] [2021-11-03 23:47:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:56,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:56,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:56,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986685472] [2021-11-03 23:47:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:56,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:56,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:47:56,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 23:47:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:57,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-03 23:47:57,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:58,352 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 15 treesize of output 1 [2021-11-03 23:47:59,577 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-03 23:47:59,577 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 40 treesize of output 39 [2021-11-03 23:47:59,615 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-03 23:47:59,616 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 29 treesize of output 28 [2021-11-03 23:47:59,874 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-03 23:47:59,875 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 45 treesize of output 41 [2021-11-03 23:47:59,958 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-03 23:47:59,958 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 38 treesize of output 34 [2021-11-03 23:48:00,302 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 31 treesize of output 15 [2021-11-03 23:48:00,310 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 15 treesize of output 1 [2021-11-03 23:48:00,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-03 23:48:00,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-03 23:48:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:01,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:01,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:01,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275640821] [2021-11-03 23:48:01,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:01,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986685472] [2021-11-03 23:48:01,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986685472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:01,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:01,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-03 23:48:01,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899786036] [2021-11-03 23:48:01,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:01,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 23:48:01,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 23:48:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-03 23:48:01,364 INFO L87 Difference]: Start difference. First operand 2474 states and 3151 transitions. Second operand has 20 states, 20 states have (on average 7.75) internal successors, (155), 20 states have internal predecessors, (155), 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) [2021-11-03 23:48:04,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15