./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:57:53,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:57:53,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:57:53,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:57:53,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:57:53,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:57:53,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:57:53,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:57:53,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:57:53,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:57:53,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:57:53,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:57:53,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:57:53,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:57:53,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:57:53,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:57:53,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:57:53,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:57:53,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:57:53,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:57:53,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:57:53,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:57:53,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:57:53,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:57:53,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:57:53,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:57:53,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:57:53,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:57:53,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:57:53,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:57:53,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:57:53,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:57:53,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:57:53,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:57:53,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:57:53,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:57:53,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:57:53,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:57:53,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:57:53,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:57:53,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:57:53,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:57:53,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:57:53,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:57:53,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:57:53,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:57:53,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:57:53,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:57:53,204 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:57:53,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:57:53,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:57:53,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:57:53,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:57:53,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:57:53,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:57:53,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:57:53,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:57:53,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:57:53,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:57:53,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:57:53,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:57:53,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:57:53,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:57:53,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:57:53,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:57:53,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-05 12:57:53,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:57:53,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:57:53,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:57:53,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:57:53,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:57:53,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-05 12:57:53,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420ee7224/4ef881133ccb48a996d8c44ddb60091c/FLAG96ec3b556 [2021-11-05 12:57:54,247 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:57:54,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-05 12:57:54,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420ee7224/4ef881133ccb48a996d8c44ddb60091c/FLAG96ec3b556 [2021-11-05 12:57:54,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420ee7224/4ef881133ccb48a996d8c44ddb60091c [2021-11-05 12:57:54,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:57:54,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:57:54,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:57:54,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:57:54,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:57:54,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:57:54" (1/1) ... [2021-11-05 12:57:54,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e17a8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:54, skipping insertion in model container [2021-11-05 12:57:54,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:57:54" (1/1) ... [2021-11-05 12:57:54,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:57:54,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:57:54,912 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-05 12:57:54,917 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-05 12:57:54,940 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:57:54,945 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:57:55,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,579 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:55,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:57:55,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:57:55,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:57:55,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:57:55,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:57:55,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:57:55,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:57:55,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:57:55,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:57:55,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:57:55,947 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:57:56,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:57:56,301 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:57:56,319 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-05 12:57:56,320 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-05 12:57:56,321 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:57:56,322 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:57:56,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:57:56,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:57:56,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:57:56,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:57:56,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:57:56,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:57:56,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:57:56,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:57:56,401 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:57:56,401 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:57:56,424 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:57:56,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,512 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,512 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:57:56,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:57:56,791 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:57:56,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56 WrapperNode [2021-11-05 12:57:56,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:57:56,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:57:56,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:57:56,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:57:56,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:56,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:57:57,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:57:57,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:57:57,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:57:57,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:57:57,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:57:57,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:57:57,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:57:57,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (1/1) ... [2021-11-05 12:57:57,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:57:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:57:57,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 12:57:57,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 12:57:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 12:57:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:57:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:57:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:57:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:57:57,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:57:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:57:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:58:04,346 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !true; [2021-11-05 12:58:04,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:58:04,352 INFO L299 CfgBuilder]: Removed 157 assume(true) statements. [2021-11-05 12:58:04,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:58:04 BoogieIcfgContainer [2021-11-05 12:58:04,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:58:04,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:58:04,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:58:04,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:58:04,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:57:54" (1/3) ... [2021-11-05 12:58:04,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1776223e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:58:04, skipping insertion in model container [2021-11-05 12:58:04,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:57:56" (2/3) ... [2021-11-05 12:58:04,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1776223e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:58:04, skipping insertion in model container [2021-11-05 12:58:04,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:58:04" (3/3) ... [2021-11-05 12:58:04,358 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-05 12:58:04,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:58:04,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 12:58:04,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:58:04,393 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 12:58:04,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 12:58:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:58:04,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:04,410 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] [2021-11-05 12:58:04,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1999182466, now seen corresponding path program 1 times [2021-11-05 12:58:04,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:04,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175324617] [2021-11-05 12:58:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:04,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:04,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:04,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175324617] [2021-11-05 12:58:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175324617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:04,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:04,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:58:04,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076533741] [2021-11-05 12:58:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:04,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:58:04,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:58:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:58:04,885 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:04,923 INFO L93 Difference]: Finished difference Result 399 states and 562 transitions. [2021-11-05 12:58:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:58:04,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-05 12:58:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:04,932 INFO L225 Difference]: With dead ends: 399 [2021-11-05 12:58:04,932 INFO L226 Difference]: Without dead ends: 195 [2021-11-05 12:58:04,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:58:04,938 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:04,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:58:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-05 12:58:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-05 12:58:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 194 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-05 12:58:04,988 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 62 [2021-11-05 12:58:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:04,988 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-05 12:58:04,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-05 12:58:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:58:04,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:04,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:58:04,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:58:04,993 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 312696489, now seen corresponding path program 1 times [2021-11-05 12:58:04,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:04,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005469199] [2021-11-05 12:58:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:04,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:05,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:05,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5733404] [2021-11-05 12:58:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:05,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:05,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:05,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:58:05,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 12:58:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:05,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:58:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:06,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:06,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:06,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005469199] [2021-11-05 12:58:06,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:06,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5733404] [2021-11-05 12:58:06,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5733404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:06,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:06,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:06,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215250173] [2021-11-05 12:58:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:06,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:58:06,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:58:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:58:06,417 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:06,891 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-11-05 12:58:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:58:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 12:58:06,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:06,894 INFO L225 Difference]: With dead ends: 278 [2021-11-05 12:58:06,894 INFO L226 Difference]: Without dead ends: 196 [2021-11-05 12:58:06,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 221.94ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:58:06,895 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 539 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 254.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 293.48ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:06,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 594 Invalid, 83 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 293.48ms Time] [2021-11-05 12:58:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-05 12:58:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-05 12:58:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 194 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 255 transitions. [2021-11-05 12:58:06,902 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 255 transitions. Word has length 65 [2021-11-05 12:58:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:06,903 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 255 transitions. [2021-11-05 12:58:06,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 255 transitions. [2021-11-05 12:58:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 12:58:06,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:06,904 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] [2021-11-05 12:58:06,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 12:58:07,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:07,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1103415697, now seen corresponding path program 1 times [2021-11-05 12:58:07,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:07,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698033885] [2021-11-05 12:58:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:07,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:07,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:07,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938118731] [2021-11-05 12:58:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:07,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:07,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:58:07,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 12:58:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:07,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:58:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:08,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:08,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:08,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698033885] [2021-11-05 12:58:08,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:08,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938118731] [2021-11-05 12:58:08,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938118731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:08,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:08,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:08,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72605415] [2021-11-05 12:58:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:08,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:08,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:08,129 INFO L87 Difference]: Start difference. First operand 195 states and 255 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:08,291 INFO L93 Difference]: Finished difference Result 547 states and 721 transitions. [2021-11-05 12:58:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:58:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-05 12:58:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:08,294 INFO L225 Difference]: With dead ends: 547 [2021-11-05 12:58:08,294 INFO L226 Difference]: Without dead ends: 374 [2021-11-05 12:58:08,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.88ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:58:08,305 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 462 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:08,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1411 Invalid, 39 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 96.86ms Time] [2021-11-05 12:58:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-05 12:58:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 201. [2021-11-05 12:58:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.3384615384615384) internal successors, (261), 200 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 261 transitions. [2021-11-05 12:58:08,315 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 261 transitions. Word has length 66 [2021-11-05 12:58:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:08,315 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 261 transitions. [2021-11-05 12:58:08,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 261 transitions. [2021-11-05 12:58:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 12:58:08,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:08,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:58:08,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 12:58:08,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-05 12:58:08,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -554146415, now seen corresponding path program 1 times [2021-11-05 12:58:08,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:08,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995135895] [2021-11-05 12:58:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:08,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:08,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:08,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995135895] [2021-11-05 12:58:08,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995135895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:08,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:08,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:58:08,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364477346] [2021-11-05 12:58:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:08,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:58:08,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:58:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:58:08,932 INFO L87 Difference]: Start difference. First operand 201 states and 261 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:10,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:13,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:14,295 INFO L93 Difference]: Finished difference Result 405 states and 529 transitions. [2021-11-05 12:58:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:58:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-05 12:58:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:14,297 INFO L225 Difference]: With dead ends: 405 [2021-11-05 12:58:14,297 INFO L226 Difference]: Without dead ends: 242 [2021-11-05 12:58:14,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 417.00ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:58:14,298 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 443 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4754.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.88ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5059.10ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:14,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1061 Invalid, 239 Unknown, 0 Unchecked, 7.88ms Time], IncrementalHoareTripleChecker [18 Valid, 219 Invalid, 2 Unknown, 0 Unchecked, 5059.10ms Time] [2021-11-05 12:58:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-05 12:58:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 219. [2021-11-05 12:58:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.3286384976525822) internal successors, (283), 218 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2021-11-05 12:58:14,305 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 70 [2021-11-05 12:58:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:14,306 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2021-11-05 12:58:14,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2021-11-05 12:58:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 12:58:14,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:14,307 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] [2021-11-05 12:58:14,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:58:14,307 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 875542541, now seen corresponding path program 1 times [2021-11-05 12:58:14,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:14,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185537293] [2021-11-05 12:58:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:14,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:14,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:14,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185537293] [2021-11-05 12:58:14,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185537293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:14,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:14,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:58:14,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26126705] [2021-11-05 12:58:14,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:58:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:58:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:58:14,551 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:14,709 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2021-11-05 12:58:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:58:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-05 12:58:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:14,711 INFO L225 Difference]: With dead ends: 401 [2021-11-05 12:58:14,711 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:58:14,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.55ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:58:14,712 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 227 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.95ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:14,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 459 Invalid, 47 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 144.95ms Time] [2021-11-05 12:58:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:58:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:58:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.3080568720379147) internal successors, (276), 216 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 276 transitions. [2021-11-05 12:58:14,722 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 276 transitions. Word has length 70 [2021-11-05 12:58:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:14,723 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 276 transitions. [2021-11-05 12:58:14,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 276 transitions. [2021-11-05 12:58:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 12:58:14,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:14,728 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] [2021-11-05 12:58:14,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:58:14,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash -162792069, now seen corresponding path program 1 times [2021-11-05 12:58:14,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:14,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488992572] [2021-11-05 12:58:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:14,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:15,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:15,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488992572] [2021-11-05 12:58:15,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488992572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:15,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:15,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:15,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686616949] [2021-11-05 12:58:15,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:15,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:15,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:15,049 INFO L87 Difference]: Start difference. First operand 217 states and 276 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:17,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:19,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:20,185 INFO L93 Difference]: Finished difference Result 403 states and 516 transitions. [2021-11-05 12:58:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:58:20,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-05 12:58:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:20,187 INFO L225 Difference]: With dead ends: 403 [2021-11-05 12:58:20,187 INFO L226 Difference]: Without dead ends: 223 [2021-11-05 12:58:20,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 307.12ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:58:20,188 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 258 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4579.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4897.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:20,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 544 Invalid, 183 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [46 Valid, 135 Invalid, 2 Unknown, 0 Unchecked, 4897.00ms Time] [2021-11-05 12:58:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-05 12:58:20,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2021-11-05 12:58:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2748815165876777) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-05 12:58:20,197 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 74 [2021-11-05 12:58:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:20,199 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-05 12:58:20,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-05 12:58:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:58:20,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:20,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:58:20,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:58:20,200 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 523765980, now seen corresponding path program 1 times [2021-11-05 12:58:20,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:20,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176603684] [2021-11-05 12:58:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:20,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:20,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:20,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176603684] [2021-11-05 12:58:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176603684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:20,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:20,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:58:20,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65333566] [2021-11-05 12:58:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:20,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:58:20,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:58:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:58:20,908 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:22,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:25,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:26,081 INFO L93 Difference]: Finished difference Result 300 states and 376 transitions. [2021-11-05 12:58:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:58:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-05 12:58:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:26,083 INFO L225 Difference]: With dead ends: 300 [2021-11-05 12:58:26,083 INFO L226 Difference]: Without dead ends: 218 [2021-11-05 12:58:26,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 392.92ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:58:26,084 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 790 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4631.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4948.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:26,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 682 Invalid, 188 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 4948.64ms Time] [2021-11-05 12:58:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-05 12:58:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-05 12:58:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 216 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 268 transitions. [2021-11-05 12:58:26,092 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 268 transitions. Word has length 76 [2021-11-05 12:58:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:26,092 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 268 transitions. [2021-11-05 12:58:26,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 268 transitions. [2021-11-05 12:58:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 12:58:26,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:26,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:58:26,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:58:26,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:26,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash 477407958, now seen corresponding path program 1 times [2021-11-05 12:58:26,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:26,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85923888] [2021-11-05 12:58:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:26,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:26,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:26,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85923888] [2021-11-05 12:58:26,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85923888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:26,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:26,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:58:26,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350426431] [2021-11-05 12:58:26,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:26,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:58:26,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:58:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:58:26,783 INFO L87 Difference]: Start difference. First operand 217 states and 268 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:28,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:30,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:33,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:34,254 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2021-11-05 12:58:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:58:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 12:58:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:34,256 INFO L225 Difference]: With dead ends: 274 [2021-11-05 12:58:34,256 INFO L226 Difference]: Without dead ends: 218 [2021-11-05 12:58:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 504.93ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:58:34,257 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 764 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6688.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7185.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:34,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 813 Invalid, 233 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [29 Valid, 201 Invalid, 3 Unknown, 0 Unchecked, 7185.67ms Time] [2021-11-05 12:58:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-05 12:58:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-05 12:58:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-05 12:58:34,264 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 79 [2021-11-05 12:58:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:34,265 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-05 12:58:34,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-05 12:58:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:58:34,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:34,266 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] [2021-11-05 12:58:34,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:58:34,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1607773165, now seen corresponding path program 1 times [2021-11-05 12:58:34,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:34,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279208848] [2021-11-05 12:58:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:34,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:34,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:34,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279208848] [2021-11-05 12:58:34,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279208848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:34,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:34,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:58:34,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682343311] [2021-11-05 12:58:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:34,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:58:34,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:58:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:58:34,502 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:36,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:37,122 INFO L93 Difference]: Finished difference Result 316 states and 397 transitions. [2021-11-05 12:58:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:58:37,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:58:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:37,123 INFO L225 Difference]: With dead ends: 316 [2021-11-05 12:58:37,124 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:58:37,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.28ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:58:37,124 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2400.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2601.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:37,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 107 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2601.64ms Time] [2021-11-05 12:58:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:58:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:58:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2511848341232228) internal successors, (264), 216 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 264 transitions. [2021-11-05 12:58:37,131 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 264 transitions. Word has length 82 [2021-11-05 12:58:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:37,132 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 264 transitions. [2021-11-05 12:58:37,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 264 transitions. [2021-11-05 12:58:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:58:37,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:37,133 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] [2021-11-05 12:58:37,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:58:37,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:58:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2007135761, now seen corresponding path program 1 times [2021-11-05 12:58:37,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:37,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400767341] [2021-11-05 12:58:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:37,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:38,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400767341] [2021-11-05 12:58:38,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400767341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:38,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:38,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:58:38,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196551928] [2021-11-05 12:58:38,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:38,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:58:38,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:58:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:58:38,575 INFO L87 Difference]: Start difference. First operand 217 states and 264 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:58:40,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:42,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:45,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:47,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:49,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:51,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:53,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:56,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:00,153 INFO L93 Difference]: Finished difference Result 364 states and 447 transitions. [2021-11-05 12:59:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:59:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:59:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:00,155 INFO L225 Difference]: With dead ends: 364 [2021-11-05 12:59:00,155 INFO L226 Difference]: Without dead ends: 237 [2021-11-05 12:59:00,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2270.53ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:59:00,156 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 300 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 56 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18306.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.92ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19934.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:00,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1935 Invalid, 762 Unknown, 0 Unchecked, 10.92ms Time], IncrementalHoareTripleChecker [56 Valid, 698 Invalid, 8 Unknown, 0 Unchecked, 19934.41ms Time] [2021-11-05 12:59:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-05 12:59:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 220. [2021-11-05 12:59:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 219 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 267 transitions. [2021-11-05 12:59:00,165 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 267 transitions. Word has length 82 [2021-11-05 12:59:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:00,165 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 267 transitions. [2021-11-05 12:59:00,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 267 transitions. [2021-11-05 12:59:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:59:00,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:00,166 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] [2021-11-05 12:59:00,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:59:00,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:59:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1722566291, now seen corresponding path program 1 times [2021-11-05 12:59:00,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:00,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994207343] [2021-11-05 12:59:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:00,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:01,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:01,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994207343] [2021-11-05 12:59:01,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994207343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:01,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:01,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:59:01,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957334899] [2021-11-05 12:59:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:01,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:59:01,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:59:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:59:01,562 INFO L87 Difference]: Start difference. First operand 220 states and 267 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:03,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:05,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:07,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:10,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:12,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:14,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:16,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:18,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:20,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:26,835 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2021-11-05 12:59:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:59:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:59:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:26,837 INFO L225 Difference]: With dead ends: 369 [2021-11-05 12:59:26,837 INFO L226 Difference]: Without dead ends: 259 [2021-11-05 12:59:26,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4279.76ms TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:59:26,838 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 622 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 42 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20235.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.02ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21728.14ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:26,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2195 Invalid, 723 Unknown, 0 Unchecked, 10.02ms Time], IncrementalHoareTripleChecker [42 Valid, 672 Invalid, 9 Unknown, 0 Unchecked, 21728.14ms Time] [2021-11-05 12:59:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-05 12:59:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2021-11-05 12:59:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2330508474576272) internal successors, (291), 241 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2021-11-05 12:59:26,849 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 82 [2021-11-05 12:59:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:26,849 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2021-11-05 12:59:26,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2021-11-05 12:59:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:59:26,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:26,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:59:26,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:59:26,851 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:59:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 904917841, now seen corresponding path program 1 times [2021-11-05 12:59:26,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:26,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810236441] [2021-11-05 12:59:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:26,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:27,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:27,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810236441] [2021-11-05 12:59:27,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810236441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:27,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:27,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:59:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738805330] [2021-11-05 12:59:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:59:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:59:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:59:27,249 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:29,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:30,274 INFO L93 Difference]: Finished difference Result 357 states and 438 transitions. [2021-11-05 12:59:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:59:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:59:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:30,275 INFO L225 Difference]: With dead ends: 357 [2021-11-05 12:59:30,275 INFO L226 Difference]: Without dead ends: 242 [2021-11-05 12:59:30,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 349.38ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:59:30,276 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 943 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2581.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2807.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:30,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 515 Invalid, 146 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 2807.61ms Time] [2021-11-05 12:59:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-05 12:59:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-05 12:59:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2245762711864407) internal successors, (289), 241 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 289 transitions. [2021-11-05 12:59:30,284 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 289 transitions. Word has length 82 [2021-11-05 12:59:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:30,285 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 289 transitions. [2021-11-05 12:59:30,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 289 transitions. [2021-11-05 12:59:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:59:30,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:30,286 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] [2021-11-05 12:59:30,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:59:30,286 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:59:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1004900463, now seen corresponding path program 1 times [2021-11-05 12:59:30,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:30,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025250827] [2021-11-05 12:59:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:30,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:30,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:30,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565035521] [2021-11-05 12:59:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:30,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:30,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:30,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 12:59:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:31,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:59:31,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:31,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:31,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:31,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025250827] [2021-11-05 12:59:31,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:31,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565035521] [2021-11-05 12:59:31,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565035521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:31,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:31,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:59:31,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299279385] [2021-11-05 12:59:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:59:31,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:59:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:59:31,302 INFO L87 Difference]: Start difference. First operand 242 states and 289 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:31,464 INFO L93 Difference]: Finished difference Result 668 states and 799 transitions. [2021-11-05 12:59:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:59:31,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:59:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:31,466 INFO L225 Difference]: With dead ends: 668 [2021-11-05 12:59:31,466 INFO L226 Difference]: Without dead ends: 451 [2021-11-05 12:59:31,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.13ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:59:31,467 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 410 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:31,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1041 Invalid, 39 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 100.28ms Time] [2021-11-05 12:59:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-05 12:59:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 248. [2021-11-05 12:59:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.21900826446281) internal successors, (295), 247 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2021-11-05 12:59:31,477 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 82 [2021-11-05 12:59:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:31,477 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2021-11-05 12:59:31,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2021-11-05 12:59:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:59:31,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:31,478 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] [2021-11-05 12:59:31,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 12:59:31,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:31,700 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:59:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -581253741, now seen corresponding path program 1 times [2021-11-05 12:59:31,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:31,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072111528] [2021-11-05 12:59:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:31,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:31,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:31,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315201239] [2021-11-05 12:59:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:31,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:31,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:31,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:31,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 12:59:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:32,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-05 12:59:32,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:32,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:32,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:32,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072111528] [2021-11-05 12:59:32,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:32,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315201239] [2021-11-05 12:59:32,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315201239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:32,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:32,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:59:32,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489286341] [2021-11-05 12:59:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:32,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:59:32,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:59:32,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:59:32,653 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:33,001 INFO L93 Difference]: Finished difference Result 454 states and 559 transitions. [2021-11-05 12:59:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:59:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:59:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:33,002 INFO L225 Difference]: With dead ends: 454 [2021-11-05 12:59:33,002 INFO L226 Difference]: Without dead ends: 324 [2021-11-05 12:59:33,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.38ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:59:33,003 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 96 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 304.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:33,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 854 Invalid, 119 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 304.00ms Time] [2021-11-05 12:59:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-05 12:59:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 207. [2021-11-05 12:59:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 206 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2021-11-05 12:59:33,011 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 82 [2021-11-05 12:59:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:33,011 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2021-11-05 12:59:33,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2021-11-05 12:59:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:59:33,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:33,014 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] [2021-11-05 12:59:33,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 12:59:33,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:33,229 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 12:59:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 824198886, now seen corresponding path program 1 times [2021-11-05 12:59:33,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:33,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139301775] [2021-11-05 12:59:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:33,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:34,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:34,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139301775] [2021-11-05 12:59:34,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139301775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:34,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:34,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:59:34,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780298071] [2021-11-05 12:59:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:34,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:59:34,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:59:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:59:34,987 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:59:37,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:39,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:41,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:43,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:45,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:47,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:50,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:52,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:54,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:56,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:05,526 INFO L93 Difference]: Finished difference Result 451 states and 555 transitions. [2021-11-05 13:00:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 13:00:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:00:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:05,529 INFO L225 Difference]: With dead ends: 451 [2021-11-05 13:00:05,529 INFO L226 Difference]: Without dead ends: 357 [2021-11-05 13:00:05,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 6140.63ms TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 13:00:05,530 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 898 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 57 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23443.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.71ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25341.78ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:05,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 2550 Invalid, 993 Unknown, 0 Unchecked, 13.71ms Time], IncrementalHoareTripleChecker [57 Valid, 926 Invalid, 10 Unknown, 0 Unchecked, 25341.78ms Time] [2021-11-05 13:00:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-05 13:00:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 256. [2021-11-05 13:00:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.212) internal successors, (303), 255 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2021-11-05 13:00:05,543 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 85 [2021-11-05 13:00:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:05,543 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2021-11-05 13:00:05,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2021-11-05 13:00:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 13:00:05,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:05,544 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] [2021-11-05 13:00:05,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 13:00:05,545 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 13:00:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1042354789, now seen corresponding path program 1 times [2021-11-05 13:00:05,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:05,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804622467] [2021-11-05 13:00:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:07,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:07,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804622467] [2021-11-05 13:00:07,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804622467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:00:07,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957621045] [2021-11-05 13:00:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:07,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:00:07,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:00:07,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:00:07,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:00:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:08,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-05 13:00:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:00:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:00:08,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:00:08,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957621045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:08,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:00:08,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2021-11-05 13:00:08,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287267493] [2021-11-05 13:00:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:08,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:08,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:00:08,932 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:09,130 INFO L93 Difference]: Finished difference Result 488 states and 578 transitions. [2021-11-05 13:00:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:00:09,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-05 13:00:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:09,132 INFO L225 Difference]: With dead ends: 488 [2021-11-05 13:00:09,132 INFO L226 Difference]: Without dead ends: 256 [2021-11-05 13:00:09,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1681.01ms TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:00:09,133 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.44ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:09,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 676 Invalid, 33 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 112.44ms Time] [2021-11-05 13:00:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-05 13:00:09,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2021-11-05 13:00:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.1991701244813278) internal successors, (289), 246 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 289 transitions. [2021-11-05 13:00:09,145 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 289 transitions. Word has length 86 [2021-11-05 13:00:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:09,146 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 289 transitions. [2021-11-05 13:00:09,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 289 transitions. [2021-11-05 13:00:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 13:00:09,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:09,147 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] [2021-11-05 13:00:09,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:00:09,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 13:00:09,360 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 13:00:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 69711058, now seen corresponding path program 1 times [2021-11-05 13:00:09,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:09,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068517445] [2021-11-05 13:00:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:09,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:09,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:00:09,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937811274] [2021-11-05 13:00:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:09,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:00:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:00:09,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:00:09,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:00:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:10,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-05 13:00:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:00:11,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-05 13:00:11,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-05 13:00:12,560 INFO L354 Elim1Store]: treesize reduction 228, result has 4.6 percent of original size [2021-11-05 13:00:12,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 107 [2021-11-05 13:00:12,656 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-05 13:00:12,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 93 [2021-11-05 13:00:12,730 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-05 13:00:12,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 92 treesize of output 84 [2021-11-05 13:00:13,447 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-11-05 13:00:13,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 96 [2021-11-05 13:00:13,547 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-05 13:00:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 66 [2021-11-05 13:00:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:13,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:00:13,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:13,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068517445] [2021-11-05 13:00:13,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:00:13,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937811274] [2021-11-05 13:00:13,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937811274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:13,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:13,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 13:00:13,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073176416] [2021-11-05 13:00:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:13,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 13:00:13,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 13:00:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:00:13,804 INFO L87 Difference]: Start difference. First operand 247 states and 289 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:15,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:18,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:20,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:22,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:24,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:29,010 INFO L93 Difference]: Finished difference Result 418 states and 509 transitions. [2021-11-05 13:00:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 13:00:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-05 13:00:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:29,012 INFO L225 Difference]: With dead ends: 418 [2021-11-05 13:00:29,012 INFO L226 Difference]: Without dead ends: 324 [2021-11-05 13:00:29,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3347.69ms TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2021-11-05 13:00:29,013 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 478 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11984.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.49ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 12787.54ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:29,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1995 Invalid, 661 Unknown, 0 Unchecked, 10.49ms Time], IncrementalHoareTripleChecker [30 Valid, 548 Invalid, 5 Unknown, 78 Unchecked, 12787.54ms Time] [2021-11-05 13:00:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-05 13:00:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 195. [2021-11-05 13:00:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 194 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-11-05 13:00:29,023 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 91 [2021-11-05 13:00:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:29,024 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-11-05 13:00:29,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-11-05 13:00:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 13:00:29,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:29,025 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] [2021-11-05 13:00:29,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:00:29,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-05 13:00:29,239 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 13:00:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash -52578388, now seen corresponding path program 1 times [2021-11-05 13:00:29,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:29,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138417150] [2021-11-05 13:00:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:29,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:29,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:00:29,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082543171] [2021-11-05 13:00:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:29,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:00:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:00:29,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:00:29,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:03:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:03:11,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 240 conjunts are in the unsatisfiable core [2021-11-05 13:03:11,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:03:11,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:03:12,431 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:03:12,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:03:13,219 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:03:13,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:03:13,940 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:03:13,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:03:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:03:15,059 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-05 13:03:15,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-05 13:03:15,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 77 [2021-11-05 13:03:15,742 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 70 treesize of output 66 [2021-11-05 13:03:15,903 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:03:15,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 75 treesize of output 92 [2021-11-05 13:03:17,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-05 13:03:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:03:35,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:03:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:03:35,649 INFO L354 Elim1Store]: treesize reduction 120, result has 44.7 percent of original size [2021-11-05 13:03:35,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 93 treesize of output 169 [2021-11-05 13:03:36,383 INFO L354 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2021-11-05 13:03:36,383 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 95 treesize of output 94 [2021-11-05 13:03:36,456 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-05 13:03:36,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 75 [2021-11-05 13:03:36,509 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-05 13:03:36,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 56 [2021-11-05 13:03:43,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:03:44,000 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-05 13:03:44,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 102 [2021-11-05 13:03:44,067 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:03:44,068 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 87 treesize of output 71 [2021-11-05 13:03:44,133 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:03:44,134 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 72 treesize of output 60 [2021-11-05 13:04:03,549 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 15 treesize of output 7 [2021-11-05 13:04:06,478 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-05 13:04:06,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 86 [2021-11-05 13:04:06,553 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:04:06,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 90 [2021-11-05 13:04:06,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:04:06,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2021-11-05 13:04:08,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:04:08,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-11-05 13:04:09,345 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:04:09,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-05 13:04:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:09,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:04:09,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:09,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138417150] [2021-11-05 13:04:09,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:04:09,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082543171] [2021-11-05 13:04:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082543171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:09,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:09,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-05 13:04:09,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417490011] [2021-11-05 13:04:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:09,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-05 13:04:09,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-05 13:04:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=783, Unknown=4, NotChecked=0, Total=870 [2021-11-05 13:04:09,636 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:11,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:16,760 INFO L93 Difference]: Finished difference Result 428 states and 518 transitions. [2021-11-05 13:04:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 13:04:16,761 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-05 13:04:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:16,762 INFO L225 Difference]: With dead ends: 428 [2021-11-05 13:04:16,762 INFO L226 Difference]: Without dead ends: 325 [2021-11-05 13:04:16,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 33738.15ms TimeCoverageRelationStatistics Valid=89, Invalid=837, Unknown=4, NotChecked=0, Total=930 [2021-11-05 13:04:16,763 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 156 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2431.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 2655.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:16,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 2737 Invalid, 759 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 1 Unknown, 686 Unchecked, 2655.51ms Time] [2021-11-05 13:04:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-05 13:04:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 239. [2021-11-05 13:04:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.1931330472103003) internal successors, (278), 238 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2021-11-05 13:04:16,780 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 94 [2021-11-05 13:04:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:16,780 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2021-11-05 13:04:16,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2021-11-05 13:04:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 13:04:16,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:16,781 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] [2021-11-05 13:04:16,995 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2021-11-05 13:04:17,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2021-11-05 13:04:17,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:17,031 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 13:04:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -21691158, now seen corresponding path program 1 times [2021-11-05 13:04:17,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:17,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779747517] [2021-11-05 13:04:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:17,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:17,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:04:17,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198094333] [2021-11-05 13:04:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:17,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:04:17,095 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) [2021-11-05 13:04:17,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:04:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:18,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-05 13:04:18,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:04:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:18,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-05 13:04:18,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:18,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-05 13:04:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,831 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-05 13:04:20,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 197 [2021-11-05 13:04:20,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,325 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-05 13:04:21,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 222 [2021-11-05 13:04:21,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,556 INFO L354 Elim1Store]: treesize reduction 196, result has 15.9 percent of original size [2021-11-05 13:04:21,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 207 treesize of output 226 [2021-11-05 13:04:21,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:04:21,761 INFO L354 Elim1Store]: treesize reduction 184, result has 16.7 percent of original size [2021-11-05 13:04:21,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 214 treesize of output 228 [2021-11-05 13:04:22,730 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-11-05 13:04:22,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 76 [2021-11-05 13:04:22,807 INFO L354 Elim1Store]: treesize reduction 17, result has 41.4 percent of original size [2021-11-05 13:04:22,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 60 [2021-11-05 13:04:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:23,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:04:23,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:23,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779747517] [2021-11-05 13:04:23,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:04:23,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198094333] [2021-11-05 13:04:23,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198094333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:23,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 13:04:23,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662981562] [2021-11-05 13:04:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:23,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:04:23,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:04:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:04:23,035 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:25,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:27,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:29,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:31,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:35,621 INFO L93 Difference]: Finished difference Result 308 states and 367 transitions. [2021-11-05 13:04:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 13:04:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-05 13:04:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:35,629 INFO L225 Difference]: With dead ends: 308 [2021-11-05 13:04:35,629 INFO L226 Difference]: Without dead ends: 240 [2021-11-05 13:04:35,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3413.93ms TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2021-11-05 13:04:35,630 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 290 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 30 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9512.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.80ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 10218.15ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:35,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1705 Invalid, 511 Unknown, 0 Unchecked, 6.80ms Time], IncrementalHoareTripleChecker [30 Valid, 413 Invalid, 4 Unknown, 64 Unchecked, 10218.15ms Time] [2021-11-05 13:04:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-05 13:04:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-11-05 13:04:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.1888412017167382) internal successors, (277), 238 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 277 transitions. [2021-11-05 13:04:35,643 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 277 transitions. Word has length 94 [2021-11-05 13:04:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:35,644 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 277 transitions. [2021-11-05 13:04:35,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 277 transitions. [2021-11-05 13:04:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 13:04:35,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:35,645 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] [2021-11-05 13:04:35,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 13:04:35,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:35,854 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 13:04:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1847424559, now seen corresponding path program 1 times [2021-11-05 13:04:35,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:35,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863077191] [2021-11-05 13:04:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:35,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:35,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:04:35,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395731248] [2021-11-05 13:04:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:35,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:35,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:04:35,905 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) [2021-11-05 13:04:35,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15