./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:10:34,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:10:34,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:10:34,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:10:34,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:10:34,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:10:34,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:10:34,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:10:34,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:10:34,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:10:34,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:10:34,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:10:34,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:10:34,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:10:34,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:10:34,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:10:34,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:10:34,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:10:34,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:10:34,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:10:34,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:10:34,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:10:34,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:10:34,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:10:34,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:10:34,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:10:34,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:10:34,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:10:34,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:10:34,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:10:34,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:10:34,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:10:34,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:10:34,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:10:34,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:10:34,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:10:34,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:10:34,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:10:34,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:10:34,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:10:34,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:10:34,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:10:34,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:10:34,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:10:34,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:10:34,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:10:34,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:10:34,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:10:34,328 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:10:34,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:10:34,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:10:34,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:10:34,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:10:34,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:10:34,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:10:34,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:10:34,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:10:34,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:10:34,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:10:34,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:10:34,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:10:34,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-11-07 10:10:34,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:10:34,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:10:34,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:10:34,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:10:34,585 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:10:34,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-07 10:10:34,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c0e1896/b1d742e146774e8ca9893670e33c9d3f/FLAG6af62619e [2021-11-07 10:10:35,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:10:35,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-07 10:10:35,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c0e1896/b1d742e146774e8ca9893670e33c9d3f/FLAG6af62619e [2021-11-07 10:10:35,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c0e1896/b1d742e146774e8ca9893670e33c9d3f [2021-11-07 10:10:35,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:10:35,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:10:35,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:10:35,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:10:35,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:10:35,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:10:35" (1/1) ... [2021-11-07 10:10:35,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243d667d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:35, skipping insertion in model container [2021-11-07 10:10:35,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:10:35" (1/1) ... [2021-11-07 10:10:35,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:10:35,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:10:35,724 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-07 10:10:35,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-07 10:10:35,753 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:10:35,759 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:10:36,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,441 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:10:36,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:10:36,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:10:36,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:10:36,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:10:36,709 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:10:36,709 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:10:36,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:10:36,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:10:36,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:10:36,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 10:10:36,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:10:36,955 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:10:36,964 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-07 10:10:36,965 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-07 10:10:36,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:10:36,967 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:10:36,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:36,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:10:37,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:10:37,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:10:37,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:10:37,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:10:37,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:10:37,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:10:37,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:10:37,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:10:37,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:10:37,128 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 10:10:37,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:10:37,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:10:37,343 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:10:37,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37 WrapperNode [2021-11-07 10:10:37,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:10:37,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:10:37,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:10:37,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:10:37,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:10:37,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:10:37,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:10:37,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:10:37,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:10:37,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:10:37,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:10:37,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:10:37,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (1/1) ... [2021-11-07 10:10:37,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:10:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:10:37,813 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) [2021-11-07 10:10:37,832 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 [2021-11-07 10:10:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:10:37,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:10:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 10:10:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:10:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:10:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:10:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:10:49,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:10:49,387 INFO L299 CfgBuilder]: Removed 788 assume(true) statements. [2021-11-07 10:10:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:10:49 BoogieIcfgContainer [2021-11-07 10:10:49,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:10:49,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:10:49,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:10:49,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:10:49,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:10:35" (1/3) ... [2021-11-07 10:10:49,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e92b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:10:49, skipping insertion in model container [2021-11-07 10:10:49,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:37" (2/3) ... [2021-11-07 10:10:49,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e92b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:10:49, skipping insertion in model container [2021-11-07 10:10:49,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:10:49" (3/3) ... [2021-11-07 10:10:49,398 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-11-07 10:10:49,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:10:49,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-11-07 10:10:49,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:10:49,452 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 [2021-11-07 10:10:49,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-11-07 10:10:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 994 states, 968 states have (on average 1.4287190082644627) internal successors, (1383), 993 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:10:49,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:49,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:10:49,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -97697725, now seen corresponding path program 1 times [2021-11-07 10:10:49,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:49,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478795157] [2021-11-07 10:10:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:49,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:10:50,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:10:50,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478795157] [2021-11-07 10:10:50,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478795157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:10:50,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:10:50,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:10:50,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603967870] [2021-11-07 10:10:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:10:50,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 10:10:50,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:10:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 10:10:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:10:50,056 INFO L87 Difference]: Start difference. First operand has 994 states, 968 states have (on average 1.4287190082644627) internal successors, (1383), 993 states have internal predecessors, (1383), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:10:50,145 INFO L93 Difference]: Finished difference Result 1982 states and 2759 transitions. [2021-11-07 10:10:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 10:10:50,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 10:10:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:10:50,162 INFO L225 Difference]: With dead ends: 1982 [2021-11-07 10:10:50,162 INFO L226 Difference]: Without dead ends: 989 [2021-11-07 10:10:50,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:10:50,175 INFO L933 BasicCegarLoop]: 1282 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, 1282 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 10:10:50,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 10:10:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-07 10:10:50,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2021-11-07 10:10:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3246887966804979) internal successors, (1277), 988 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1277 transitions. [2021-11-07 10:10:50,253 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1277 transitions. Word has length 42 [2021-11-07 10:10:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:10:50,253 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1277 transitions. [2021-11-07 10:10:50,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1277 transitions. [2021-11-07 10:10:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:10:50,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:50,255 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] [2021-11-07 10:10:50,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:10:50,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 268775359, now seen corresponding path program 1 times [2021-11-07 10:10:50,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:50,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859329192] [2021-11-07 10:10:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:50,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:10:50,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:10:50,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859329192] [2021-11-07 10:10:50,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859329192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:10:50,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:10:50,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:10:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947155254] [2021-11-07 10:10:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:10:50,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:10:50,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:10:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:10:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:10:50,602 INFO L87 Difference]: Start difference. First operand 989 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:10:50,805 INFO L93 Difference]: Finished difference Result 2111 states and 2719 transitions. [2021-11-07 10:10:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:10:50,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 10:10:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:10:50,811 INFO L225 Difference]: With dead ends: 2111 [2021-11-07 10:10:50,811 INFO L226 Difference]: Without dead ends: 1202 [2021-11-07 10:10:50,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.00ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:10:50,815 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 1523 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.99ms IncrementalHoareTripleChecker+Time [2021-11-07 10:10:50,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 2266 Invalid, 33 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 153.99ms Time] [2021-11-07 10:10:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-07 10:10:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-07 10:10:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3215767634854771) internal successors, (1274), 988 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1274 transitions. [2021-11-07 10:10:50,843 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1274 transitions. Word has length 42 [2021-11-07 10:10:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:10:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1274 transitions. [2021-11-07 10:10:50,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1274 transitions. [2021-11-07 10:10:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 10:10:50,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:50,855 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] [2021-11-07 10:10:50,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:10:50,856 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash 82325853, now seen corresponding path program 1 times [2021-11-07 10:10:50,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:50,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803635396] [2021-11-07 10:10:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:50,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:10:51,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:10:51,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803635396] [2021-11-07 10:10:51,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803635396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:10:51,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:10:51,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:10:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869084071] [2021-11-07 10:10:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:10:51,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:10:51,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:10:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:10:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:10:51,188 INFO L87 Difference]: Start difference. First operand 989 states and 1274 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:10:52,621 INFO L93 Difference]: Finished difference Result 2623 states and 3352 transitions. [2021-11-07 10:10:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:10:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-07 10:10:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:10:52,626 INFO L225 Difference]: With dead ends: 2623 [2021-11-07 10:10:52,627 INFO L226 Difference]: Without dead ends: 1682 [2021-11-07 10:10:52,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 139.07ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:10:52,629 INFO L933 BasicCegarLoop]: 1238 mSDtfsCounter, 3331 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1082.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.92ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1241.66ms IncrementalHoareTripleChecker+Time [2021-11-07 10:10:52,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 3197 Invalid, 332 Unknown, 0 Unchecked, 13.92ms Time], IncrementalHoareTripleChecker [23 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1241.66ms Time] [2021-11-07 10:10:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-07 10:10:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 989. [2021-11-07 10:10:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3184647302904564) internal successors, (1271), 988 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1271 transitions. [2021-11-07 10:10:52,685 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1271 transitions. Word has length 50 [2021-11-07 10:10:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:10:52,685 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1271 transitions. [2021-11-07 10:10:52,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1271 transitions. [2021-11-07 10:10:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 10:10:52,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:52,686 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] [2021-11-07 10:10:52,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:10:52,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1376076053, now seen corresponding path program 1 times [2021-11-07 10:10:52,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:52,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037490039] [2021-11-07 10:10:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:52,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:52,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:10:52,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732671847] [2021-11-07 10:10:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:52,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:10:52,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:10:52,755 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) [2021-11-07 10:10:52,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:10:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:53,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:10:53,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:10:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:10:53,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:10:53,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:10:53,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037490039] [2021-11-07 10:10:53,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:10:53,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732671847] [2021-11-07 10:10:53,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732671847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:10:53,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:10:53,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:10:53,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090134787] [2021-11-07 10:10:53,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:10:53,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:10:53,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:10:53,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:10:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:10:53,912 INFO L87 Difference]: Start difference. First operand 989 states and 1271 transitions. Second operand has 6 states, 6 states have (on average 11.0) 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) [2021-11-07 10:10:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:10:54,887 INFO L93 Difference]: Finished difference Result 2802 states and 3579 transitions. [2021-11-07 10:10:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:10:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) 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 [2021-11-07 10:10:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:10:54,893 INFO L225 Difference]: With dead ends: 2802 [2021-11-07 10:10:54,893 INFO L226 Difference]: Without dead ends: 1892 [2021-11-07 10:10:54,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 209.39ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-07 10:10:54,896 INFO L933 BasicCegarLoop]: 1190 mSDtfsCounter, 6649 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 671.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6649 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.07ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 744.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:10:54,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6649 Valid, 3154 Invalid, 210 Unknown, 0 Unchecked, 12.07ms Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 744.88ms Time] [2021-11-07 10:10:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-11-07 10:10:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 989. [2021-11-07 10:10:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3153526970954357) internal successors, (1268), 988 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1268 transitions. [2021-11-07 10:10:54,971 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1268 transitions. Word has length 66 [2021-11-07 10:10:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:10:54,973 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1268 transitions. [2021-11-07 10:10:54,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) 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) [2021-11-07 10:10:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1268 transitions. [2021-11-07 10:10:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 10:10:54,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:54,976 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] [2021-11-07 10:10:55,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 10:10:55,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:10:55,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash 726765177, now seen corresponding path program 1 times [2021-11-07 10:10:55,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:55,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525905974] [2021-11-07 10:10:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:55,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:55,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:10:55,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872704075] [2021-11-07 10:10:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:55,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:10:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:10:55,269 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) [2021-11-07 10:10:55,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 10:10:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:55,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:10:55,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:10:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:10:56,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:10:56,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:10:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525905974] [2021-11-07 10:10:56,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:10:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872704075] [2021-11-07 10:10:56,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872704075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:10:56,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:10:56,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:10:56,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734341650] [2021-11-07 10:10:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:10:56,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:10:56,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:10:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:10:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:10:56,534 INFO L87 Difference]: Start difference. First operand 989 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:10:58,716 INFO L93 Difference]: Finished difference Result 2827 states and 3607 transitions. [2021-11-07 10:10:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:10:58,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 10:10:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:10:58,722 INFO L225 Difference]: With dead ends: 2827 [2021-11-07 10:10:58,722 INFO L226 Difference]: Without dead ends: 1901 [2021-11-07 10:10:58,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 387.34ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:10:58,724 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 6894 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1611.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.79ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1767.05ms IncrementalHoareTripleChecker+Time [2021-11-07 10:10:58,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 3899 Invalid, 519 Unknown, 0 Unchecked, 16.79ms Time], IncrementalHoareTripleChecker [46 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1767.05ms Time] [2021-11-07 10:10:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2021-11-07 10:10:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 989. [2021-11-07 10:10:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.312240663900415) internal successors, (1265), 988 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1265 transitions. [2021-11-07 10:10:58,780 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1265 transitions. Word has length 90 [2021-11-07 10:10:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:10:58,782 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1265 transitions. [2021-11-07 10:10:58,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:10:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1265 transitions. [2021-11-07 10:10:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 10:10:58,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:10:58,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:10:58,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 10:10:58,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:10:58,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:10:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:10:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1774462527, now seen corresponding path program 1 times [2021-11-07 10:10:58,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:10:58,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256830208] [2021-11-07 10:10:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:58,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:10:59,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:10:59,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855234671] [2021-11-07 10:10:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:10:59,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:10:59,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:10:59,066 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) [2021-11-07 10:10:59,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 10:10:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:10:59,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:10:59,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:00,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:00,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:00,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256830208] [2021-11-07 10:11:00,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:00,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855234671] [2021-11-07 10:11:00,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855234671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:00,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:00,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:00,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261996271] [2021-11-07 10:11:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:00,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:11:00,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:11:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:00,522 INFO L87 Difference]: Start difference. First operand 989 states and 1265 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:01,059 INFO L93 Difference]: Finished difference Result 2039 states and 2607 transitions. [2021-11-07 10:11:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:11:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-07 10:11:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:01,064 INFO L225 Difference]: With dead ends: 2039 [2021-11-07 10:11:01,064 INFO L226 Difference]: Without dead ends: 1202 [2021-11-07 10:11:01,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 168.49ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-07 10:11:01,066 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 5474 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 343.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.98ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:01,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 1697 Invalid, 121 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 374.98ms Time] [2021-11-07 10:11:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-07 10:11:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-07 10:11:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3101659751037344) internal successors, (1263), 988 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1263 transitions. [2021-11-07 10:11:01,093 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1263 transitions. Word has length 106 [2021-11-07 10:11:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:01,094 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1263 transitions. [2021-11-07 10:11:01,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1263 transitions. [2021-11-07 10:11:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 10:11:01,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:01,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:01,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:01,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:01,302 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2044010096, now seen corresponding path program 1 times [2021-11-07 10:11:01,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:01,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959298155] [2021-11-07 10:11:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:01,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:01,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:01,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104138819] [2021-11-07 10:11:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:01,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:01,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:01,383 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) [2021-11-07 10:11:01,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 10:11:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:02,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:11:02,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:03,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:03,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959298155] [2021-11-07 10:11:03,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104138819] [2021-11-07 10:11:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104138819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:03,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:03,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:11:03,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331746979] [2021-11-07 10:11:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:03,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:11:03,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:11:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:03,054 INFO L87 Difference]: Start difference. First operand 989 states and 1263 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:04,793 INFO L93 Difference]: Finished difference Result 2079 states and 2651 transitions. [2021-11-07 10:11:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:11:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-07 10:11:04,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:04,797 INFO L225 Difference]: With dead ends: 2079 [2021-11-07 10:11:04,797 INFO L226 Difference]: Without dead ends: 1242 [2021-11-07 10:11:04,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 369.74ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:11:04,799 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 5877 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1284.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.63ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1401.34ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:04,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5877 Valid, 2509 Invalid, 433 Unknown, 0 Unchecked, 10.63ms Time], IncrementalHoareTripleChecker [39 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1401.34ms Time] [2021-11-07 10:11:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-07 10:11:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 989. [2021-11-07 10:11:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3060165975103735) internal successors, (1259), 988 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1259 transitions. [2021-11-07 10:11:04,821 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1259 transitions. Word has length 110 [2021-11-07 10:11:04,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:04,821 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1259 transitions. [2021-11-07 10:11:04,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1259 transitions. [2021-11-07 10:11:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 10:11:04,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:04,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:04,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:05,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:05,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -22427764, now seen corresponding path program 1 times [2021-11-07 10:11:05,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:05,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124495465] [2021-11-07 10:11:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:05,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:05,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:05,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034922381] [2021-11-07 10:11:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:05,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:05,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:05,116 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) [2021-11-07 10:11:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 10:11:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:05,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:11:05,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:06,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:06,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:06,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124495465] [2021-11-07 10:11:06,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:06,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034922381] [2021-11-07 10:11:06,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034922381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:06,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:06,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:11:06,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500855608] [2021-11-07 10:11:06,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:06,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:11:06,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:06,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:11:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:06,667 INFO L87 Difference]: Start difference. First operand 989 states and 1259 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:07,612 INFO L93 Difference]: Finished difference Result 2316 states and 2943 transitions. [2021-11-07 10:11:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:11:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 10:11:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:07,617 INFO L225 Difference]: With dead ends: 2316 [2021-11-07 10:11:07,617 INFO L226 Difference]: Without dead ends: 1479 [2021-11-07 10:11:07,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 317.94ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:11:07,619 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 7909 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 592.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7909 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.90ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.38ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:07,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7909 Valid, 2062 Invalid, 224 Unknown, 0 Unchecked, 7.90ms Time], IncrementalHoareTripleChecker [42 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 643.38ms Time] [2021-11-07 10:11:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-07 10:11:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 989. [2021-11-07 10:11:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.303941908713693) internal successors, (1257), 988 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1257 transitions. [2021-11-07 10:11:07,644 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1257 transitions. Word has length 118 [2021-11-07 10:11:07,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:07,644 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1257 transitions. [2021-11-07 10:11:07,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1257 transitions. [2021-11-07 10:11:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 10:11:07,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:07,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:07,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:07,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:07,868 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1548527879, now seen corresponding path program 1 times [2021-11-07 10:11:07,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:07,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735951960] [2021-11-07 10:11:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:07,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:07,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:07,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371527442] [2021-11-07 10:11:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:07,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:07,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:07,934 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) [2021-11-07 10:11:07,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 10:11:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 10:11:08,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:09,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:09,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:09,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735951960] [2021-11-07 10:11:09,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:09,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371527442] [2021-11-07 10:11:09,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371527442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:09,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:09,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:11:09,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712611988] [2021-11-07 10:11:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:09,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 10:11:09,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 10:11:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:11:09,532 INFO L87 Difference]: Start difference. First operand 989 states and 1257 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:11,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:11,179 INFO L93 Difference]: Finished difference Result 2068 states and 2639 transitions. [2021-11-07 10:11:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:11:11,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-07 10:11:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:11,183 INFO L225 Difference]: With dead ends: 2068 [2021-11-07 10:11:11,184 INFO L226 Difference]: Without dead ends: 1231 [2021-11-07 10:11:11,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 300.24ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:11:11,185 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 5521 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1272.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5521 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.72ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1379.71ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:11,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5521 Valid, 3908 Invalid, 557 Unknown, 0 Unchecked, 10.72ms Time], IncrementalHoareTripleChecker [72 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1379.71ms Time] [2021-11-07 10:11:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-07 10:11:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 989. [2021-11-07 10:11:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.295643153526971) internal successors, (1249), 988 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1249 transitions. [2021-11-07 10:11:11,209 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1249 transitions. Word has length 127 [2021-11-07 10:11:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:11,209 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1249 transitions. [2021-11-07 10:11:11,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1249 transitions. [2021-11-07 10:11:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 10:11:11,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:11,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:11,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:11,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:11,434 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -197690883, now seen corresponding path program 1 times [2021-11-07 10:11:11,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:11,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440914082] [2021-11-07 10:11:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:11,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:11,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:11,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680155008] [2021-11-07 10:11:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:11,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:11,519 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) [2021-11-07 10:11:11,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 10:11:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:12,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 10:11:12,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:13,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:13,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:13,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440914082] [2021-11-07 10:11:13,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:13,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680155008] [2021-11-07 10:11:13,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680155008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:13,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:13,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:11:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719359118] [2021-11-07 10:11:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:11:13,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:11:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:13,064 INFO L87 Difference]: Start difference. First operand 989 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:14,665 INFO L93 Difference]: Finished difference Result 2354 states and 2956 transitions. [2021-11-07 10:11:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 10:11:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-07 10:11:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:14,670 INFO L225 Difference]: With dead ends: 2354 [2021-11-07 10:11:14,670 INFO L226 Difference]: Without dead ends: 1517 [2021-11-07 10:11:14,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 343.82ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-07 10:11:14,672 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 6446 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1146.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6446 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1250.38ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:14,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6446 Valid, 2778 Invalid, 431 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [60 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1250.38ms Time] [2021-11-07 10:11:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-07 10:11:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 989. [2021-11-07 10:11:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.2935684647302905) internal successors, (1247), 988 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1247 transitions. [2021-11-07 10:11:14,702 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1247 transitions. Word has length 130 [2021-11-07 10:11:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:14,702 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1247 transitions. [2021-11-07 10:11:14,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1247 transitions. [2021-11-07 10:11:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 10:11:14,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:14,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:14,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:14,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:14,929 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2058424223, now seen corresponding path program 1 times [2021-11-07 10:11:14,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:14,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865375408] [2021-11-07 10:11:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:14,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:14,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:14,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158638848] [2021-11-07 10:11:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:14,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:14,996 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) [2021-11-07 10:11:14,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 10:11:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:15,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:11:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:16,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:16,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:16,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865375408] [2021-11-07 10:11:16,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:16,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158638848] [2021-11-07 10:11:16,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158638848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:16,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:16,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:11:16,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936548455] [2021-11-07 10:11:16,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:16,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:11:16,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:11:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:16,305 INFO L87 Difference]: Start difference. First operand 989 states and 1247 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:18,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:11:20,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:11:22,559 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 [] [2021-11-07 10:11:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:30,269 INFO L93 Difference]: Finished difference Result 2701 states and 3402 transitions. [2021-11-07 10:11:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:11:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 10:11:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:30,275 INFO L225 Difference]: With dead ends: 2701 [2021-11-07 10:11:30,276 INFO L226 Difference]: Without dead ends: 1781 [2021-11-07 10:11:30,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 404.78ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:11:30,279 INFO L933 BasicCegarLoop]: 1730 mSDtfsCounter, 937 mSDsluCounter, 5602 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12595.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.47ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13513.41ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:30,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 7332 Invalid, 1787 Unknown, 0 Unchecked, 26.47ms Time], IncrementalHoareTripleChecker [43 Valid, 1741 Invalid, 3 Unknown, 0 Unchecked, 13513.41ms Time] [2021-11-07 10:11:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-11-07 10:11:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1013. [2021-11-07 10:11:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 988 states have (on average 1.29251012145749) internal successors, (1277), 1012 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1277 transitions. [2021-11-07 10:11:30,315 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1277 transitions. Word has length 138 [2021-11-07 10:11:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:30,316 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1277 transitions. [2021-11-07 10:11:30,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1277 transitions. [2021-11-07 10:11:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 10:11:30,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:30,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:30,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:30,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 10:11:30,528 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -520084193, now seen corresponding path program 1 times [2021-11-07 10:11:30,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:30,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318683429] [2021-11-07 10:11:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:30,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:30,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:30,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453445720] [2021-11-07 10:11:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:30,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:30,591 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) [2021-11-07 10:11:30,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 10:11:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:31,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:11:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:31,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:31,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:31,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318683429] [2021-11-07 10:11:31,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:31,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453445720] [2021-11-07 10:11:31,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453445720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:31,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:31,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:11:31,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163281171] [2021-11-07 10:11:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:31,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:11:31,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:11:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:11:31,645 INFO L87 Difference]: Start difference. First operand 1013 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:32,064 INFO L93 Difference]: Finished difference Result 1975 states and 2490 transitions. [2021-11-07 10:11:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:11:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 10:11:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:32,070 INFO L225 Difference]: With dead ends: 1975 [2021-11-07 10:11:32,070 INFO L226 Difference]: Without dead ends: 1037 [2021-11-07 10:11:32,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:32,072 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 14 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.62ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:32,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3669 Invalid, 113 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 333.62ms Time] [2021-11-07 10:11:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-07 10:11:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1025. [2021-11-07 10:11:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1000 states have (on average 1.289) internal successors, (1289), 1024 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1289 transitions. [2021-11-07 10:11:32,102 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1289 transitions. Word has length 138 [2021-11-07 10:11:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:32,103 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1289 transitions. [2021-11-07 10:11:32,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1289 transitions. [2021-11-07 10:11:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 10:11:32,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:32,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:32,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:32,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:32,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1001164451, now seen corresponding path program 1 times [2021-11-07 10:11:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:32,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686051315] [2021-11-07 10:11:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:32,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:32,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:32,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59817253] [2021-11-07 10:11:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:32,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:32,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:11:32,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 10:11:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:33,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 10:11:33,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:33,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:33,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:33,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686051315] [2021-11-07 10:11:33,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:33,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59817253] [2021-11-07 10:11:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59817253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:33,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:33,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:33,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671589338] [2021-11-07 10:11:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:33,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:11:33,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:11:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:33,651 INFO L87 Difference]: Start difference. First operand 1025 states and 1289 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:34,198 INFO L93 Difference]: Finished difference Result 2810 states and 3526 transitions. [2021-11-07 10:11:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:11:34,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 10:11:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:34,203 INFO L225 Difference]: With dead ends: 2810 [2021-11-07 10:11:34,203 INFO L226 Difference]: Without dead ends: 1869 [2021-11-07 10:11:34,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.57ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:34,207 INFO L933 BasicCegarLoop]: 2216 mSDtfsCounter, 1079 mSDsluCounter, 5531 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 416.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 7747 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.55ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 447.81ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:34,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 7747 Invalid, 161 Unknown, 0 Unchecked, 5.55ms Time], IncrementalHoareTripleChecker [26 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 447.81ms Time] [2021-11-07 10:11:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2021-11-07 10:11:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1073. [2021-11-07 10:11:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1048 states have (on average 1.2872137404580153) internal successors, (1349), 1072 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1349 transitions. [2021-11-07 10:11:34,244 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1349 transitions. Word has length 138 [2021-11-07 10:11:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:34,244 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1349 transitions. [2021-11-07 10:11:34,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1349 transitions. [2021-11-07 10:11:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 10:11:34,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:34,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:34,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:34,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 10:11:34,464 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1005834329, now seen corresponding path program 1 times [2021-11-07 10:11:34,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:34,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992287266] [2021-11-07 10:11:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:34,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:34,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:34,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104131152] [2021-11-07 10:11:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:34,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:34,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:34,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:11:34,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 10:11:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:35,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-07 10:11:35,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:37,394 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 32 treesize of output 24 [2021-11-07 10:11:37,402 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 21 treesize of output 13 [2021-11-07 10:11:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:37,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:37,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:37,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992287266] [2021-11-07 10:11:37,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:37,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104131152] [2021-11-07 10:11:37,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104131152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:37,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:37,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 10:11:37,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832513827] [2021-11-07 10:11:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:37,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 10:11:37,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 10:11:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-07 10:11:37,799 INFO L87 Difference]: Start difference. First operand 1073 states and 1349 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:39,843 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 [] [2021-11-07 10:11:42,012 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 [] [2021-11-07 10:11:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:56,389 INFO L93 Difference]: Finished difference Result 3938 states and 4924 transitions. [2021-11-07 10:11:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 10:11:56,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 10:11:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:56,398 INFO L225 Difference]: With dead ends: 3938 [2021-11-07 10:11:56,398 INFO L226 Difference]: Without dead ends: 2975 [2021-11-07 10:11:56,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 4246.82ms TimeCoverageRelationStatistics Valid=348, Invalid=1058, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 10:11:56,401 INFO L933 BasicCegarLoop]: 1975 mSDtfsCounter, 5909 mSDsluCounter, 14089 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 243 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13613.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5909 SdHoareTripleChecker+Valid, 16064 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.03ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14631.10ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:56,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5909 Valid, 16064 Invalid, 3035 Unknown, 0 Unchecked, 57.03ms Time], IncrementalHoareTripleChecker [243 Valid, 2790 Invalid, 2 Unknown, 0 Unchecked, 14631.10ms Time] [2021-11-07 10:11:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-11-07 10:11:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1081. [2021-11-07 10:11:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1056 states have (on average 1.285037878787879) internal successors, (1357), 1080 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1357 transitions. [2021-11-07 10:11:56,458 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1357 transitions. Word has length 138 [2021-11-07 10:11:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:56,459 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 1357 transitions. [2021-11-07 10:11:56,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1357 transitions. [2021-11-07 10:11:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 10:11:56,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:56,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:56,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 10:11:56,670 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:11:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -653265510, now seen corresponding path program 1 times [2021-11-07 10:11:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:56,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16326406] [2021-11-07 10:11:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:56,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:56,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:56,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688270899] [2021-11-07 10:11:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:56,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:56,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:11:56,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 10:11:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 10:11:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:59,155 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 29 treesize of output 21 [2021-11-07 10:11:59,163 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 18 treesize of output 10 [2021-11-07 10:11:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:59,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:59,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:59,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16326406] [2021-11-07 10:11:59,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:59,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688270899] [2021-11-07 10:11:59,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688270899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:59,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:59,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 10:11:59,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673938219] [2021-11-07 10:11:59,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:59,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 10:11:59,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 10:11:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 10:11:59,544 INFO L87 Difference]: Start difference. First operand 1081 states and 1357 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:01,587 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 [] [2021-11-07 10:12:03,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:05,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:12:19,263 INFO L93 Difference]: Finished difference Result 3502 states and 4379 transitions. [2021-11-07 10:12:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 10:12:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 10:12:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:12:19,272 INFO L225 Difference]: With dead ends: 3502 [2021-11-07 10:12:19,272 INFO L226 Difference]: Without dead ends: 2521 [2021-11-07 10:12:19,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2585.72ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-11-07 10:12:19,275 INFO L933 BasicCegarLoop]: 1948 mSDtfsCounter, 3867 mSDsluCounter, 10946 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 120 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15909.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 12894 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.35ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17222.72ms IncrementalHoareTripleChecker+Time [2021-11-07 10:12:19,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3867 Valid, 12894 Invalid, 2916 Unknown, 0 Unchecked, 52.35ms Time], IncrementalHoareTripleChecker [120 Valid, 2793 Invalid, 3 Unknown, 0 Unchecked, 17222.72ms Time] [2021-11-07 10:12:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-11-07 10:12:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1888. [2021-11-07 10:12:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1863 states have (on average 1.2887815351583467) internal successors, (2401), 1887 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2401 transitions. [2021-11-07 10:12:19,367 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2401 transitions. Word has length 140 [2021-11-07 10:12:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:12:19,368 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2401 transitions. [2021-11-07 10:12:19,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2401 transitions. [2021-11-07 10:12:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 10:12:19,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:12:19,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:12:19,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 10:12:19,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 10:12:19,584 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:12:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:12:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1608307740, now seen corresponding path program 1 times [2021-11-07 10:12:19,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:12:19,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359952371] [2021-11-07 10:12:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:19,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:12:19,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:12:19,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209953079] [2021-11-07 10:12:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:19,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:12:19,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:12:19,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 10:12:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:12:20,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:12:20,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:12:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:12:20,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:12:20,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:12:20,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359952371] [2021-11-07 10:12:20,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:12:20,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209953079] [2021-11-07 10:12:20,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209953079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:12:20,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:12:20,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:12:20,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532094754] [2021-11-07 10:12:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:12:20,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:12:20,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:12:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:12:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:12:20,921 INFO L87 Difference]: Start difference. First operand 1888 states and 2401 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:12:23,103 INFO L93 Difference]: Finished difference Result 4036 states and 5174 transitions. [2021-11-07 10:12:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:12:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 10:12:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:12:23,110 INFO L225 Difference]: With dead ends: 4036 [2021-11-07 10:12:23,110 INFO L226 Difference]: Without dead ends: 2195 [2021-11-07 10:12:23,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:12:23,114 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 254 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1817.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.54ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2017.68ms IncrementalHoareTripleChecker+Time [2021-11-07 10:12:23,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 3376 Invalid, 659 Unknown, 0 Unchecked, 8.54ms Time], IncrementalHoareTripleChecker [137 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 2017.68ms Time] [2021-11-07 10:12:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-07 10:12:23,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2008. [2021-11-07 10:12:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1983 states have (on average 1.269793242561775) internal successors, (2518), 2007 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2518 transitions. [2021-11-07 10:12:23,190 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2518 transitions. Word has length 140 [2021-11-07 10:12:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:12:23,190 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2518 transitions. [2021-11-07 10:12:23,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2518 transitions. [2021-11-07 10:12:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 10:12:23,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:12:23,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:12:23,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 10:12:23,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 10:12:23,408 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:12:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:12:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash -374324517, now seen corresponding path program 1 times [2021-11-07 10:12:23,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:12:23,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188618987] [2021-11-07 10:12:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:23,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:12:23,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:12:23,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553742239] [2021-11-07 10:12:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:23,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:23,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:12:23,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:12:23,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 10:12:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:12:25,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-07 10:12:25,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:12:25,145 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 [2021-11-07 10:12:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:25,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:12:26,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:26,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:12:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:26,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:12:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:26,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:12:26,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:26,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:12:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:26,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-07 10:12:27,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:27,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:12:27,483 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-07 10:12:27,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 10:12:27,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 86 [2021-11-07 10:12:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:27,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 74 [2021-11-07 10:12:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:28,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-11-07 10:12:29,237 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 10:12:29,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 33 [2021-11-07 10:12:30,371 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-07 10:12:30,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 29 [2021-11-07 10:12:30,786 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 10:12:30,787 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 91 treesize of output 90 [2021-11-07 10:12:30,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:30,882 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:12:30,883 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 87 treesize of output 78 [2021-11-07 10:12:30,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:30,981 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:12:30,981 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 72 treesize of output 63 [2021-11-07 10:12:38,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:38,183 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 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-07 10:12:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:38,230 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 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-07 10:12:38,758 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 41 treesize of output 29 [2021-11-07 10:12:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:12:39,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:12:39,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:12:39,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188618987] [2021-11-07 10:12:39,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:12:39,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553742239] [2021-11-07 10:12:39,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553742239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:12:39,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:12:39,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-07 10:12:39,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576902952] [2021-11-07 10:12:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:12:39,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 10:12:39,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:12:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 10:12:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=689, Unknown=1, NotChecked=0, Total=812 [2021-11-07 10:12:39,167 INFO L87 Difference]: Start difference. First operand 2008 states and 2518 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:41,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:43,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:45,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:47,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:49,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:51,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:54,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:56,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:16,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:13:17,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:13:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:13:21,355 INFO L93 Difference]: Finished difference Result 4018 states and 5037 transitions. [2021-11-07 10:13:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 10:13:21,356 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-07 10:13:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:13:21,360 INFO L225 Difference]: With dead ends: 4018 [2021-11-07 10:13:21,360 INFO L226 Difference]: Without dead ends: 2070 [2021-11-07 10:13:21,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 12726.34ms TimeCoverageRelationStatistics Valid=213, Invalid=1268, Unknown=1, NotChecked=0, Total=1482 [2021-11-07 10:13:21,362 INFO L933 BasicCegarLoop]: 1209 mSDtfsCounter, 156 mSDsluCounter, 13925 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 35 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34510.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 15134 SdHoareTripleChecker+Invalid, 5045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.84ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 872 IncrementalHoareTripleChecker+Unchecked, 37407.19ms IncrementalHoareTripleChecker+Time [2021-11-07 10:13:21,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 15134 Invalid, 5045 Unknown, 0 Unchecked, 59.84ms Time], IncrementalHoareTripleChecker [35 Valid, 4129 Invalid, 9 Unknown, 872 Unchecked, 37407.19ms Time] [2021-11-07 10:13:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-07 10:13:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2042. [2021-11-07 10:13:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2017 states have (on average 1.2687159147248388) internal successors, (2559), 2041 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2559 transitions. [2021-11-07 10:13:21,433 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2559 transitions. Word has length 141 [2021-11-07 10:13:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:13:21,433 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 2559 transitions. [2021-11-07 10:13:21,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2559 transitions. [2021-11-07 10:13:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 10:13:21,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:13:21,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:13:21,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 10:13:21,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:13:21,636 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:13:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:13:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1991764967, now seen corresponding path program 1 times [2021-11-07 10:13:21,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:13:21,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797158717] [2021-11-07 10:13:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:21,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:13:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:13:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:13:21,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:13:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797158717] [2021-11-07 10:13:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797158717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:13:21,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:13:21,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:13:21,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435800500] [2021-11-07 10:13:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:13:21,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:13:21,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:13:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:13:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:13:21,800 INFO L87 Difference]: Start difference. First operand 2042 states and 2559 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:13:21,911 INFO L93 Difference]: Finished difference Result 4060 states and 5090 transitions. [2021-11-07 10:13:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:13:21,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-07 10:13:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:13:21,923 INFO L225 Difference]: With dead ends: 4060 [2021-11-07 10:13:21,923 INFO L226 Difference]: Without dead ends: 2041 [2021-11-07 10:13:21,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:13:21,926 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 0 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.91ms IncrementalHoareTripleChecker+Time [2021-11-07 10:13:21,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2484 Invalid, 14 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 47.91ms Time] [2021-11-07 10:13:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2021-11-07 10:13:21,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2040. [2021-11-07 10:13:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2015 states have (on average 1.26848635235732) internal successors, (2556), 2039 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2556 transitions. [2021-11-07 10:13:21,998 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2556 transitions. Word has length 141 [2021-11-07 10:13:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:13:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2556 transitions. [2021-11-07 10:13:21,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2556 transitions. [2021-11-07 10:13:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 10:13:21,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:13:21,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:13:22,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 10:13:22,000 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:13:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:13:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1717355586, now seen corresponding path program 1 times [2021-11-07 10:13:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:13:22,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718141614] [2021-11-07 10:13:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:22,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:13:22,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:13:22,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96479050] [2021-11-07 10:13:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:22,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:13:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:13:22,060 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:13:22,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 10:13:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:13:22,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:13:22,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:13:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:13:23,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:13:23,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:13:23,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718141614] [2021-11-07 10:13:23,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:13:23,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96479050] [2021-11-07 10:13:23,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96479050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:13:23,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:13:23,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:13:23,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127529893] [2021-11-07 10:13:23,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:13:23,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:13:23,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:13:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:13:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:13:23,421 INFO L87 Difference]: Start difference. First operand 2040 states and 2556 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:25,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:27,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:13:35,458 INFO L93 Difference]: Finished difference Result 5169 states and 6461 transitions. [2021-11-07 10:13:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:13:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-11-07 10:13:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:13:35,466 INFO L225 Difference]: With dead ends: 5169 [2021-11-07 10:13:35,467 INFO L226 Difference]: Without dead ends: 3209 [2021-11-07 10:13:35,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 278.90ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:13:35,471 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 792 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 241 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10369.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 5202 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.99ms SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11607.76ms IncrementalHoareTripleChecker+Time [2021-11-07 10:13:35,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 5202 Invalid, 1919 Unknown, 0 Unchecked, 22.99ms Time], IncrementalHoareTripleChecker [241 Valid, 1676 Invalid, 2 Unknown, 0 Unchecked, 11607.76ms Time] [2021-11-07 10:13:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2021-11-07 10:13:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2102. [2021-11-07 10:13:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2077 states have (on average 1.2599903707270101) internal successors, (2617), 2101 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2617 transitions. [2021-11-07 10:13:35,593 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2617 transitions. Word has length 142 [2021-11-07 10:13:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:13:35,594 INFO L470 AbstractCegarLoop]: Abstraction has 2102 states and 2617 transitions. [2021-11-07 10:13:35,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2617 transitions. [2021-11-07 10:13:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 10:13:35,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:13:35,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:13:35,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 10:13:35,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:13:35,796 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:13:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:13:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash -149353088, now seen corresponding path program 1 times [2021-11-07 10:13:35,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:13:35,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029279069] [2021-11-07 10:13:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:35,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:13:35,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:13:35,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634654564] [2021-11-07 10:13:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:35,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:13:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:13:35,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:13:35,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 10:13:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:13:36,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-07 10:13:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:13:38,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-07 10:13:38,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-07 10:13:38,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-07 10:13:38,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-07 10:13:39,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 10:13:39,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 10:13:39,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 10:13:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:13:39,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:13:39,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:13:39,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029279069] [2021-11-07 10:13:39,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:13:39,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634654564] [2021-11-07 10:13:39,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634654564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:13:39,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:13:39,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 10:13:39,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832260897] [2021-11-07 10:13:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:13:39,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 10:13:39,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:13:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 10:13:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-07 10:13:39,459 INFO L87 Difference]: Start difference. First operand 2102 states and 2617 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:41,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:43,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:45,946 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 [] [2021-11-07 10:14:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:14:06,836 INFO L93 Difference]: Finished difference Result 5714 states and 7065 transitions. [2021-11-07 10:14:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 10:14:06,837 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-11-07 10:14:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:14:06,845 INFO L225 Difference]: With dead ends: 5714 [2021-11-07 10:14:06,845 INFO L226 Difference]: Without dead ends: 3908 [2021-11-07 10:14:06,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4126.25ms TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 10:14:06,850 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 4863 mSDsluCounter, 16469 mSDsCounter, 0 mSdLazyCounter, 4526 mSolverCounterSat, 184 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21527.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 18556 SdHoareTripleChecker+Invalid, 4713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.75ms SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 4526 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23514.35ms IncrementalHoareTripleChecker+Time [2021-11-07 10:14:06,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4863 Valid, 18556 Invalid, 4713 Unknown, 0 Unchecked, 71.75ms Time], IncrementalHoareTripleChecker [184 Valid, 4526 Invalid, 3 Unknown, 0 Unchecked, 23514.35ms Time] [2021-11-07 10:14:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-11-07 10:14:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3116. [2021-11-07 10:14:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3091 states have (on average 1.2607570365577483) internal successors, (3897), 3115 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 3897 transitions. [2021-11-07 10:14:06,996 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 3897 transitions. Word has length 142 [2021-11-07 10:14:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:14:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 3116 states and 3897 transitions. [2021-11-07 10:14:06,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 3897 transitions. [2021-11-07 10:14:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 10:14:06,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:14:06,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:14:07,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 10:14:07,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:14:07,199 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:14:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:14:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1932908619, now seen corresponding path program 1 times [2021-11-07 10:14:07,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:14:07,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027938783] [2021-11-07 10:14:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:14:07,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:14:07,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:14:07,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28158700] [2021-11-07 10:14:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:14:07,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:14:07,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:14:07,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:14:07,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 10:14:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:14:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-07 10:14:08,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:14:11,248 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 32 treesize of output 24 [2021-11-07 10:14:11,258 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 21 treesize of output 13 [2021-11-07 10:14:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:14:11,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:14:11,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:14:11,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027938783] [2021-11-07 10:14:11,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:14:11,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28158700] [2021-11-07 10:14:11,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28158700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:14:11,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:14:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 10:14:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734639758] [2021-11-07 10:14:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:14:11,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 10:14:11,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:14:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 10:14:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-07 10:14:11,636 INFO L87 Difference]: Start difference. First operand 3116 states and 3897 transitions. Second operand has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:13,680 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 [] [2021-11-07 10:14:15,973 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 [] [2021-11-07 10:14:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:14:48,680 INFO L93 Difference]: Finished difference Result 10135 states and 12581 transitions. [2021-11-07 10:14:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 10:14:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-11-07 10:14:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:14:48,694 INFO L225 Difference]: With dead ends: 10135 [2021-11-07 10:14:48,695 INFO L226 Difference]: Without dead ends: 8253 [2021-11-07 10:14:48,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 9911.79ms TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 10:14:48,700 INFO L933 BasicCegarLoop]: 2348 mSDtfsCounter, 4964 mSDsluCounter, 20016 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 235 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25126.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4964 SdHoareTripleChecker+Valid, 22364 SdHoareTripleChecker+Invalid, 6105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.20ms SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27540.95ms IncrementalHoareTripleChecker+Time [2021-11-07 10:14:48,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4964 Valid, 22364 Invalid, 6105 Unknown, 0 Unchecked, 98.20ms Time], IncrementalHoareTripleChecker [235 Valid, 5868 Invalid, 2 Unknown, 0 Unchecked, 27540.95ms Time] [2021-11-07 10:14:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2021-11-07 10:14:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 3141. [2021-11-07 10:14:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3116 states have (on average 1.2609114249037228) internal successors, (3929), 3140 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 3929 transitions. [2021-11-07 10:14:48,857 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 3929 transitions. Word has length 143 [2021-11-07 10:14:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:14:48,858 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 3929 transitions. [2021-11-07 10:14:48,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 3929 transitions. [2021-11-07 10:14:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 10:14:48,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:14:48,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:14:48,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 10:14:49,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:14:49,067 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:14:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:14:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -901867721, now seen corresponding path program 1 times [2021-11-07 10:14:49,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:14:49,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400758431] [2021-11-07 10:14:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:14:49,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:14:49,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:14:49,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854761946] [2021-11-07 10:14:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:14:49,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:14:49,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:14:49,131 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:14:49,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 10:14:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:14:50,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 3199 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-07 10:14:50,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:14:51,065 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:14:51,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2021-11-07 10:14:51,159 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:14:51,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2021-11-07 10:14:51,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:14:51,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-07 10:14:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:14:52,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:14:52,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:14:52,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400758431] [2021-11-07 10:14:52,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:14:52,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854761946] [2021-11-07 10:14:52,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854761946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:14:52,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:14:52,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 10:14:52,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35570279] [2021-11-07 10:14:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:14:52,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 10:14:52,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:14:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 10:14:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-07 10:14:52,693 INFO L87 Difference]: Start difference. First operand 3141 states and 3929 transitions. Second operand has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:14:54,740 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 [] [2021-11-07 10:14:56,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:14:59,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:15:01,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:15:04,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:15:23,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:15:33,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:15:44,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:15:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:15:53,285 INFO L93 Difference]: Finished difference Result 15580 states and 19346 transitions. [2021-11-07 10:15:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 10:15:53,287 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-11-07 10:15:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:15:53,310 INFO L225 Difference]: With dead ends: 15580 [2021-11-07 10:15:53,311 INFO L226 Difference]: Without dead ends: 13761 [2021-11-07 10:15:53,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 7877.38ms TimeCoverageRelationStatistics Valid=986, Invalid=4564, Unknown=0, NotChecked=0, Total=5550 [2021-11-07 10:15:53,318 INFO L933 BasicCegarLoop]: 3743 mSDtfsCounter, 8426 mSDsluCounter, 39375 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 175 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47115.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8426 SdHoareTripleChecker+Valid, 43118 SdHoareTripleChecker+Invalid, 7838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 143.46ms SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 7655 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52142.71ms IncrementalHoareTripleChecker+Time [2021-11-07 10:15:53,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8426 Valid, 43118 Invalid, 7838 Unknown, 0 Unchecked, 143.46ms Time], IncrementalHoareTripleChecker [175 Valid, 7655 Invalid, 8 Unknown, 0 Unchecked, 52142.71ms Time] [2021-11-07 10:15:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2021-11-07 10:15:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 3956. [2021-11-07 10:15:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3931 states have (on average 1.2620198422793183) internal successors, (4961), 3955 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:15:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 4961 transitions. [2021-11-07 10:15:53,610 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 4961 transitions. Word has length 143 [2021-11-07 10:15:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:15:53,611 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 4961 transitions. [2021-11-07 10:15:53,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:15:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 4961 transitions. [2021-11-07 10:15:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 10:15:53,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:15:53,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:15:53,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 10:15:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:15:53,831 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:15:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:15:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 779892486, now seen corresponding path program 1 times [2021-11-07 10:15:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:15:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557698324] [2021-11-07 10:15:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:15:53,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:15:53,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:15:53,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50453523] [2021-11-07 10:15:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:15:53,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:15:53,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:15:53,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:15:53,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 10:15:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:15:55,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-07 10:15:55,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:15:57,043 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:15:57,043 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 48 treesize of output 44 [2021-11-07 10:15:57,139 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:15:57,139 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 44 treesize of output 40 [2021-11-07 10:15:57,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:15:57,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-07 10:16:00,032 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:16:00,032 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 48 treesize of output 44 [2021-11-07 10:16:00,147 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-07 10:16:00,148 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 44 treesize of output 40 [2021-11-07 10:16:00,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:16:00,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-07 10:16:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:16:02,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:16:02,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:16:02,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557698324] [2021-11-07 10:16:02,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:16:02,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50453523] [2021-11-07 10:16:02,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50453523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:16:02,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:16:02,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-07 10:16:02,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061348954] [2021-11-07 10:16:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:16:02,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 10:16:02,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:16:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 10:16:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-11-07 10:16:02,405 INFO L87 Difference]: Start difference. First operand 3956 states and 4961 transitions. Second operand has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:04,454 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 [] [2021-11-07 10:16:06,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:16:08,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:16:11,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:01,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:17:20,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:19:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:19:05,774 INFO L93 Difference]: Finished difference Result 35054 states and 43344 transitions. [2021-11-07 10:19:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2021-11-07 10:19:05,776 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 10:19:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:19:05,824 INFO L225 Difference]: With dead ends: 35054 [2021-11-07 10:19:05,824 INFO L226 Difference]: Without dead ends: 31549 [2021-11-07 10:19:05,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51336 ImplicationChecksByTransitivity, 90224.46ms TimeCoverageRelationStatistics Valid=10643, Invalid=108037, Unknown=0, NotChecked=0, Total=118680 [2021-11-07 10:19:05,846 INFO L933 BasicCegarLoop]: 3927 mSDtfsCounter, 36563 mSDsluCounter, 64477 mSDsCounter, 0 mSdLazyCounter, 18444 mSolverCounterSat, 1890 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82972.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36563 SdHoareTripleChecker+Valid, 68404 SdHoareTripleChecker+Invalid, 20339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 351.85ms SdHoareTripleChecker+Time, 1890 IncrementalHoareTripleChecker+Valid, 18444 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91705.58ms IncrementalHoareTripleChecker+Time [2021-11-07 10:19:05,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36563 Valid, 68404 Invalid, 20339 Unknown, 0 Unchecked, 351.85ms Time], IncrementalHoareTripleChecker [1890 Valid, 18444 Invalid, 5 Unknown, 0 Unchecked, 91705.58ms Time] [2021-11-07 10:19:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31549 states. [2021-11-07 10:19:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31549 to 13573. [2021-11-07 10:19:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13573 states, 13548 states have (on average 1.2615146147032772) internal successors, (17091), 13572 states have internal predecessors, (17091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:19:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13573 states to 13573 states and 17091 transitions. [2021-11-07 10:19:06,722 INFO L78 Accepts]: Start accepts. Automaton has 13573 states and 17091 transitions. Word has length 144 [2021-11-07 10:19:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:19:06,722 INFO L470 AbstractCegarLoop]: Abstraction has 13573 states and 17091 transitions. [2021-11-07 10:19:06,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:19:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13573 states and 17091 transitions. [2021-11-07 10:19:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 10:19:06,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:19:06,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:19:06,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 10:19:06,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:19:06,940 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:19:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:19:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1681109716, now seen corresponding path program 1 times [2021-11-07 10:19:06,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:19:06,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052185409] [2021-11-07 10:19:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:19:06,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:19:06,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:19:06,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17372542] [2021-11-07 10:19:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:19:06,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:19:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:19:06,998 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:19:07,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 10:19:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:19:07,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-07 10:19:07,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:19:08,003 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 [2021-11-07 10:19:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:09,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:19:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:09,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-07 10:19:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:09,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:19:09,854 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-07 10:19:09,855 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 71 [2021-11-07 10:19:09,901 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-07 10:19:09,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2021-11-07 10:19:09,948 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 10:19:09,949 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 50 treesize of output 38 [2021-11-07 10:19:10,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:10,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:19:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:10,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-07 10:19:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:10,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:19:10,715 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 10:19:10,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-07 10:19:11,068 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 10:19:11,068 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 91 treesize of output 90 [2021-11-07 10:19:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:11,152 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:19:11,152 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 87 treesize of output 78 [2021-11-07 10:19:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:11,229 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:19:11,229 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 72 treesize of output 63 [2021-11-07 10:19:14,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:14,120 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 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-07 10:19:14,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:14,138 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 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-07 10:19:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:19:24,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-07 10:19:30,254 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 41 treesize of output 29 [2021-11-07 10:19:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:19:30,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:19:30,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:19:30,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052185409] [2021-11-07 10:19:30,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:19:30,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17372542] [2021-11-07 10:19:30,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17372542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:19:30,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:19:30,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 10:19:30,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554980887] [2021-11-07 10:19:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:19:30,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 10:19:30,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:19:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 10:19:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=373, Unknown=2, NotChecked=0, Total=462 [2021-11-07 10:19:30,707 INFO L87 Difference]: Start difference. First operand 13573 states and 17091 transitions. Second operand has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:19:32,749 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 [] [2021-11-07 10:19:35,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:19:37,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:19:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:19:54,758 INFO L93 Difference]: Finished difference Result 27327 states and 34411 transitions. [2021-11-07 10:19:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 10:19:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-11-07 10:19:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:19:54,773 INFO L225 Difference]: With dead ends: 27327 [2021-11-07 10:19:54,774 INFO L226 Difference]: Without dead ends: 13540 [2021-11-07 10:19:54,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 28524.09ms TimeCoverageRelationStatistics Valid=235, Invalid=953, Unknown=2, NotChecked=0, Total=1190 [2021-11-07 10:19:54,786 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 322 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 59 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11374.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 5548 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.59ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 13082.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:19:54,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 5548 Invalid, 1401 Unknown, 0 Unchecked, 16.59ms Time], IncrementalHoareTripleChecker [59 Valid, 1189 Invalid, 3 Unknown, 150 Unchecked, 13082.29ms Time] [2021-11-07 10:19:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13540 states. [2021-11-07 10:19:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13540 to 13539. [2021-11-07 10:19:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13514 states have (on average 1.2616545804351043) internal successors, (17050), 13538 states have internal predecessors, (17050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:19:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 17050 transitions. [2021-11-07 10:19:55,481 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 17050 transitions. Word has length 146 [2021-11-07 10:19:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:19:55,482 INFO L470 AbstractCegarLoop]: Abstraction has 13539 states and 17050 transitions. [2021-11-07 10:19:55,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:19:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 17050 transitions. [2021-11-07 10:19:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 10:19:55,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:19:55,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:19:55,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 10:19:55,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 10:19:55,699 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:19:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:19:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -832263013, now seen corresponding path program 1 times [2021-11-07 10:19:55,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:19:55,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900245900] [2021-11-07 10:19:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:19:55,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:19:55,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:19:55,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598157882] [2021-11-07 10:19:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:19:55,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:19:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:19:55,749 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:19:55,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 10:19:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:19:56,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-07 10:19:56,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:19:57,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-07 10:19:57,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-07 10:19:57,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-07 10:19:57,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-07 10:19:58,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 10:19:58,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-11-07 10:19:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:19:58,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:19:58,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:19:58,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900245900] [2021-11-07 10:19:58,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:19:58,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598157882] [2021-11-07 10:19:58,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598157882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:19:58,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:19:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 10:19:58,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147861970] [2021-11-07 10:19:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:19:58,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 10:19:58,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:19:58,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 10:19:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 10:19:58,308 INFO L87 Difference]: Start difference. First operand 13539 states and 17050 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:20:00,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:02,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:04,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:07,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:20:19,289 INFO L93 Difference]: Finished difference Result 25985 states and 32661 transitions. [2021-11-07 10:20:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 10:20:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-07 10:20:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:20:19,309 INFO L225 Difference]: With dead ends: 25985 [2021-11-07 10:20:19,309 INFO L226 Difference]: Without dead ends: 19616 [2021-11-07 10:20:19,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1132.56ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-07 10:20:19,315 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 3435 mSDsluCounter, 10997 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 134 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17041.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3435 SdHoareTripleChecker+Valid, 12928 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.22ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19050.70ms IncrementalHoareTripleChecker+Time [2021-11-07 10:20:19,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3435 Valid, 12928 Invalid, 3362 Unknown, 0 Unchecked, 38.22ms Time], IncrementalHoareTripleChecker [134 Valid, 3224 Invalid, 4 Unknown, 0 Unchecked, 19050.70ms Time] [2021-11-07 10:20:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19616 states. [2021-11-07 10:20:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19616 to 13562. [2021-11-07 10:20:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13562 states, 13537 states have (on average 1.2615793750461697) internal successors, (17078), 13561 states have internal predecessors, (17078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:20:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13562 states to 13562 states and 17078 transitions. [2021-11-07 10:20:20,037 INFO L78 Accepts]: Start accepts. Automaton has 13562 states and 17078 transitions. Word has length 148 [2021-11-07 10:20:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:20:20,037 INFO L470 AbstractCegarLoop]: Abstraction has 13562 states and 17078 transitions. [2021-11-07 10:20:20,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:20:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13562 states and 17078 transitions. [2021-11-07 10:20:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 10:20:20,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:20:20,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:20:20,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 10:20:20,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 10:20:20,252 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:20:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:20:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1839170597, now seen corresponding path program 1 times [2021-11-07 10:20:20,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:20:20,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665746458] [2021-11-07 10:20:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:20:20,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:20:20,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:20:20,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008146470] [2021-11-07 10:20:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:20:20,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:20:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:20:20,301 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:20:20,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 10:20:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:20:21,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-07 10:20:21,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:20:24,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-07 10:20:24,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-07 10:20:25,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-07 10:20:25,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-07 10:20:26,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 10:20:26,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 10:20:26,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-11-07 10:20:26,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 10:20:26,185 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 10:20:26,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-07 10:20:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:20:26,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:20:26,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:20:26,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665746458] [2021-11-07 10:20:26,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:20:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008146470] [2021-11-07 10:20:26,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008146470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:20:26,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:20:26,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 10:20:26,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953063613] [2021-11-07 10:20:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:20:26,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 10:20:26,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:20:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 10:20:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:20:26,796 INFO L87 Difference]: Start difference. First operand 13562 states and 17078 transitions. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:20:28,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:31,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:33,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:35,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:38,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:40,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:20:42,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:05,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:21:20,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:21:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:21:22,433 INFO L93 Difference]: Finished difference Result 28203 states and 35286 transitions. [2021-11-07 10:21:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 10:21:22,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-07 10:21:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:21:22,458 INFO L225 Difference]: With dead ends: 28203 [2021-11-07 10:21:22,459 INFO L226 Difference]: Without dead ends: 21866 [2021-11-07 10:21:22,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 8852.71ms TimeCoverageRelationStatistics Valid=807, Invalid=4163, Unknown=0, NotChecked=0, Total=4970 [2021-11-07 10:21:22,469 INFO L933 BasicCegarLoop]: 2128 mSDtfsCounter, 12084 mSDsluCounter, 34560 mSDsCounter, 0 mSdLazyCounter, 9096 mSolverCounterSat, 694 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42386.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12084 SdHoareTripleChecker+Valid, 36688 SdHoareTripleChecker+Invalid, 9797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.63ms SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 9096 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47128.48ms IncrementalHoareTripleChecker+Time [2021-11-07 10:21:22,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12084 Valid, 36688 Invalid, 9797 Unknown, 0 Unchecked, 122.63ms Time], IncrementalHoareTripleChecker [694 Valid, 9096 Invalid, 7 Unknown, 0 Unchecked, 47128.48ms Time] [2021-11-07 10:21:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2021-11-07 10:21:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 13058. [2021-11-07 10:21:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13058 states, 13033 states have (on average 1.2605693240236324) internal successors, (16429), 13057 states have internal predecessors, (16429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13058 states to 13058 states and 16429 transitions. [2021-11-07 10:21:23,242 INFO L78 Accepts]: Start accepts. Automaton has 13058 states and 16429 transitions. Word has length 148 [2021-11-07 10:21:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:21:23,243 INFO L470 AbstractCegarLoop]: Abstraction has 13058 states and 16429 transitions. [2021-11-07 10:21:23,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 13058 states and 16429 transitions. [2021-11-07 10:21:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 10:21:23,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:21:23,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:21:23,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 10:21:23,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 10:21:23,452 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:21:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:21:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -10288936, now seen corresponding path program 1 times [2021-11-07 10:21:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:21:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421601646] [2021-11-07 10:21:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:21:23,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:21:23,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:21:23,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713920811] [2021-11-07 10:21:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:21:23,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:21:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:21:23,537 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:21:23,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 10:21:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:21:25,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-07 10:21:25,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:21:25,183 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 [2021-11-07 10:21:25,681 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 10:21:25,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 10:21:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:26,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:21:26,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:26,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:21:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:26,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:21:26,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:26,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:21:27,217 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 10:21:27,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-07 10:21:27,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:27,467 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:21:27,467 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 67 treesize of output 58 [2021-11-07 10:21:27,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:27,526 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:21:27,526 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 52 treesize of output 43 [2021-11-07 10:21:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:28,401 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-07 10:21:28,402 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 10:21:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:28,443 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-07 10:21:28,443 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 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-07 10:21:28,661 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 9 treesize of output 3 [2021-11-07 10:21:28,682 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 9 treesize of output 3 [2021-11-07 10:21:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:21:29,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:21:29,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:21:29,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421601646] [2021-11-07 10:21:29,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:21:29,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713920811] [2021-11-07 10:21:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713920811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:21:29,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:21:29,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 10:21:29,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345694998] [2021-11-07 10:21:29,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:21:29,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 10:21:29,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:21:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 10:21:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-07 10:21:29,134 INFO L87 Difference]: Start difference. First operand 13058 states and 16429 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:31,296 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 [] [2021-11-07 10:21:33,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:36,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:21:44,038 INFO L93 Difference]: Finished difference Result 25349 states and 31896 transitions. [2021-11-07 10:21:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 10:21:44,039 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-11-07 10:21:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:21:44,050 INFO L225 Difference]: With dead ends: 25349 [2021-11-07 10:21:44,050 INFO L226 Difference]: Without dead ends: 13388 [2021-11-07 10:21:44,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2197.90ms TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-11-07 10:21:44,059 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 277 mSDsluCounter, 9079 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11775.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 10330 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.52ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 13359.61ms IncrementalHoareTripleChecker+Time [2021-11-07 10:21:44,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 10330 Invalid, 2055 Unknown, 0 Unchecked, 20.52ms Time], IncrementalHoareTripleChecker [13 Valid, 1757 Invalid, 3 Unknown, 282 Unchecked, 13359.61ms Time] [2021-11-07 10:21:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2021-11-07 10:21:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 13103. [2021-11-07 10:21:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 13078 states have (on average 1.2603609114543508) internal successors, (16483), 13102 states have internal predecessors, (16483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 16483 transitions. [2021-11-07 10:21:44,803 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 16483 transitions. Word has length 149 [2021-11-07 10:21:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:21:44,803 INFO L470 AbstractCegarLoop]: Abstraction has 13103 states and 16483 transitions. [2021-11-07 10:21:44,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 16483 transitions. [2021-11-07 10:21:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 10:21:44,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:21:44,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:21:44,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 10:21:45,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:21:45,014 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:21:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:21:45,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1672155112, now seen corresponding path program 1 times [2021-11-07 10:21:45,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:21:45,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601247361] [2021-11-07 10:21:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:21:45,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:21:45,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:21:45,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505519196] [2021-11-07 10:21:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:21:45,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:21:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:21:45,064 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:21:45,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 10:21:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:21:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-07 10:21:45,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:21:45,967 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 [2021-11-07 10:21:46,247 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 10:21:46,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-07 10:21:46,360 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 23 treesize of output 19 [2021-11-07 10:21:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:46,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2021-11-07 10:21:47,040 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-07 10:21:47,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2021-11-07 10:21:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:21:47,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2021-11-07 10:21:47,386 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-07 10:21:47,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-07 10:21:47,539 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-07 10:21:47,539 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 43 treesize of output 30 [2021-11-07 10:21:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:21:48,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:21:48,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:21:48,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601247361] [2021-11-07 10:21:48,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:21:48,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505519196] [2021-11-07 10:21:48,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505519196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:21:48,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:21:48,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 10:21:48,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124277765] [2021-11-07 10:21:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:21:48,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 10:21:48,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:21:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 10:21:48,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-07 10:21:48,190 INFO L87 Difference]: Start difference. First operand 13103 states and 16483 transitions. Second operand has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:21:50,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:52,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:54,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:57,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:21:59,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:01,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:22:10,642 INFO L93 Difference]: Finished difference Result 26148 states and 32898 transitions. [2021-11-07 10:22:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 10:22:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-11-07 10:22:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:22:10,655 INFO L225 Difference]: With dead ends: 26148 [2021-11-07 10:22:10,655 INFO L226 Difference]: Without dead ends: 13125 [2021-11-07 10:22:10,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2155.71ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:22:10,667 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 149 mSDsluCounter, 6875 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17616.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 8095 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.29ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20073.72ms IncrementalHoareTripleChecker+Time [2021-11-07 10:22:10,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 8095 Invalid, 1901 Unknown, 0 Unchecked, 37.29ms Time], IncrementalHoareTripleChecker [29 Valid, 1866 Invalid, 6 Unknown, 0 Unchecked, 20073.72ms Time] [2021-11-07 10:22:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2021-11-07 10:22:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 13103. [2021-11-07 10:22:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 13078 states have (on average 1.2602079828719988) internal successors, (16481), 13102 states have internal predecessors, (16481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:22:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 16481 transitions. [2021-11-07 10:22:11,392 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 16481 transitions. Word has length 149 [2021-11-07 10:22:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:22:11,393 INFO L470 AbstractCegarLoop]: Abstraction has 13103 states and 16481 transitions. [2021-11-07 10:22:11,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:22:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 16481 transitions. [2021-11-07 10:22:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 10:22:11,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:22:11,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:22:11,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 10:22:11,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 10:22:11,603 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:22:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:22:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -189971278, now seen corresponding path program 1 times [2021-11-07 10:22:11,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:22:11,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787893905] [2021-11-07 10:22:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:22:11,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:22:11,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:22:11,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662399251] [2021-11-07 10:22:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:22:11,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:22:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:22:11,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:22:11,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 10:22:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:22:12,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-07 10:22:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:22:12,623 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 [2021-11-07 10:22:12,961 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 10:22:12,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 10:22:13,073 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 13 treesize of output 9 [2021-11-07 10:22:13,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:22:13,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 10:22:13,854 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-07 10:22:13,855 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 26 treesize of output 25 [2021-11-07 10:22:13,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:22:13,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:22:14,292 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 10:22:14,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-07 10:22:14,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:22:14,475 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:22:14,476 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 36 treesize of output 27 [2021-11-07 10:22:14,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:22:14,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 40 [2021-11-07 10:22:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:22:15,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-07 10:22:15,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 10:22:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:22:16,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:22:16,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:22:16,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787893905] [2021-11-07 10:22:16,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:22:16,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662399251] [2021-11-07 10:22:16,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662399251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:22:16,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:22:16,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-07 10:22:16,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306893131] [2021-11-07 10:22:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:22:16,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 10:22:16,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:22:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 10:22:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-07 10:22:16,328 INFO L87 Difference]: Start difference. First operand 13103 states and 16481 transitions. Second operand has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:22:18,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:20,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:23,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:25,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:27,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:30,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:32,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:34,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:37,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:22:59,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 10:23:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:23:16,678 INFO L93 Difference]: Finished difference Result 40963 states and 51058 transitions. [2021-11-07 10:23:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 10:23:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-07 10:23:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:23:16,721 INFO L225 Difference]: With dead ends: 40963 [2021-11-07 10:23:16,721 INFO L226 Difference]: Without dead ends: 28230 [2021-11-07 10:23:16,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 5827.36ms TimeCoverageRelationStatistics Valid=450, Invalid=2630, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 10:23:16,734 INFO L933 BasicCegarLoop]: 2184 mSDtfsCounter, 2972 mSDsluCounter, 19760 mSDsCounter, 0 mSdLazyCounter, 7368 mSolverCounterSat, 328 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47225.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 21944 SdHoareTripleChecker+Invalid, 7736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.30ms SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 7368 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 53774.79ms IncrementalHoareTripleChecker+Time [2021-11-07 10:23:16,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2972 Valid, 21944 Invalid, 7736 Unknown, 0 Unchecked, 95.30ms Time], IncrementalHoareTripleChecker [328 Valid, 7368 Invalid, 10 Unknown, 30 Unchecked, 53774.79ms Time] [2021-11-07 10:23:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28230 states. [2021-11-07 10:23:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28230 to 25545. [2021-11-07 10:23:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25545 states, 25520 states have (on average 1.260423197492163) internal successors, (32166), 25544 states have internal predecessors, (32166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:23:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25545 states to 25545 states and 32166 transitions. [2021-11-07 10:23:18,535 INFO L78 Accepts]: Start accepts. Automaton has 25545 states and 32166 transitions. Word has length 151 [2021-11-07 10:23:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:23:18,535 INFO L470 AbstractCegarLoop]: Abstraction has 25545 states and 32166 transitions. [2021-11-07 10:23:18,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:23:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25545 states and 32166 transitions. [2021-11-07 10:23:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 10:23:18,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:23:18,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:23:18,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 10:23:18,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 10:23:18,749 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-07 10:23:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:23:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 772414834, now seen corresponding path program 1 times [2021-11-07 10:23:18,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:23:18,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813172813] [2021-11-07 10:23:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:23:18,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:23:18,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:23:18,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129824159] [2021-11-07 10:23:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:23:18,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:23:18,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:23:18,814 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:23:18,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 10:23:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:23:19,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-07 10:23:19,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:23:22,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:23:22,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 73 [2021-11-07 10:23:22,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:23:22,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2021-11-07 10:23:22,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:23:22,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2021-11-07 10:23:25,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2021-11-07 10:23:25,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2021-11-07 10:23:25,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-07 10:23:26,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 10:23:26,128 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-11-07 10:23:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:23:26,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:23:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:23:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813172813] [2021-11-07 10:23:26,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:23:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129824159] [2021-11-07 10:23:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129824159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:23:26,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:23:26,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 10:23:26,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418872018] [2021-11-07 10:23:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:23:26,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 10:23:26,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:23:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 10:23:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:23:26,482 INFO L87 Difference]: Start difference. First operand 25545 states and 32166 transitions. Second operand has 25 states, 25 states have (on average 6.04) internal successors, (151), 25 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:23:28,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:31,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:33,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:36,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:38,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:41,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:43,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:46,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:23:48,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15