./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_hash_table_get_entry_count_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:34:44,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:34:44,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:34:44,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:34:44,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:34:44,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:34:44,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:34:44,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:34:44,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:34:44,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:34:44,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:34:44,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:34:44,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:34:44,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:34:44,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:34:44,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:34:44,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:34:44,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:34:44,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:34:44,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:34:44,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:34:44,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:34:44,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:34:44,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:34:44,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:34:44,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:34:44,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:34:44,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:34:44,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:34:44,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:34:44,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:34:44,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:34:44,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:34:44,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:34:44,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:34:44,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:34:44,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:34:44,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:34:44,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:34:44,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:34:44,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:34:44,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:34:44,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:34:44,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:34:44,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:34:44,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:34:44,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:34:44,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:34:44,411 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:34:44,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:34:44,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:34:44,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:34:44,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:34:44,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:34:44,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:34:44,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:34:44,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:34:44,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:34:44,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:34:44,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:34:44,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:34:44,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:34:44,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:34:44,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:34:44,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:34:44,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2021-11-07 09:34:44,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:34:44,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:34:44,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:34:44,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:34:44,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:34:44,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-07 09:34:44,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046c361f6/731735a29292431fa23547469daa4ebc/FLAGd1b27bb34 [2021-11-07 09:34:45,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:34:45,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-07 09:34:45,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046c361f6/731735a29292431fa23547469daa4ebc/FLAGd1b27bb34 [2021-11-07 09:34:45,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046c361f6/731735a29292431fa23547469daa4ebc [2021-11-07 09:34:45,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:34:45,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:34:45,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:34:45,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:34:45,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:34:45,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:45" (1/1) ... [2021-11-07 09:34:45,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686e5b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:45, skipping insertion in model container [2021-11-07 09:34:45,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:45" (1/1) ... [2021-11-07 09:34:45,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:34:45,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:34:45,854 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-07 09:34:45,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-07 09:34:45,893 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:34:45,901 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:34:46,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:46,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:34:47,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:34:47,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:34:47,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:34:47,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:34:47,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:34:47,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:34:47,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:34:47,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:34:47,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:34:47,322 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:34:47,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,713 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,742 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,742 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:34:47,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:34:47,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-07 09:34:47,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-07 09:34:47,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:34:47,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:34:47,865 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,878 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:47,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:34:47,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:34:47,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:34:47,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:34:47,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:34:47,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:34:47,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:34:47,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:34:47,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:34:47,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:34:47,938 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:34:48,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,049 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:34:48,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:34:48,303 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:34:48,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48 WrapperNode [2021-11-07 09:34:48,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:34:48,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:34:48,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:34:48,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:34:48,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:34:48,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:34:48,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:34:48,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:34:48,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:34:48,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:34:48,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:34:48,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:34:48,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (1/1) ... [2021-11-07 09:34:48,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:34:48,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:34:48,647 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 09:34:48,687 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 09:34:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:34:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:34:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 09:34:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:34:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 09:34:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:34:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:34:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:34:55,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:34:55,751 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-07 09:34:55,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:55 BoogieIcfgContainer [2021-11-07 09:34:55,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:34:55,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:34:55,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:34:55,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:34:55,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:34:45" (1/3) ... [2021-11-07 09:34:55,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce755d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:55, skipping insertion in model container [2021-11-07 09:34:55,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:48" (2/3) ... [2021-11-07 09:34:55,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce755d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:55, skipping insertion in model container [2021-11-07 09:34:55,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:55" (3/3) ... [2021-11-07 09:34:55,759 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2021-11-07 09:34:55,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:34:55,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 09:34:55,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:34:55,807 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 09:34:55,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 09:34:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:34:55,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:34:55,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:34:55,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:34:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:34:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2070018022, now seen corresponding path program 1 times [2021-11-07 09:34:55,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:34:55,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67314391] [2021-11-07 09:34:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:55,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:34:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:34:56,399 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 09:34:56,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:34:56,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67314391] [2021-11-07 09:34:56,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67314391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:34:56,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:34:56,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:34:56,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074777991] [2021-11-07 09:34:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:34:56,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:34:56,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:34:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:34:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:34:56,440 INFO L87 Difference]: Start difference. First operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:34:56,471 INFO L93 Difference]: Finished difference Result 172 states and 219 transitions. [2021-11-07 09:34:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:34:56,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:34:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:34:56,480 INFO L225 Difference]: With dead ends: 172 [2021-11-07 09:34:56,480 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 09:34:56,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:34:56,487 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:34:56,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:34:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 09:34:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-07 09:34:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2021-11-07 09:34:56,515 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 41 [2021-11-07 09:34:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:34:56,515 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2021-11-07 09:34:56,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2021-11-07 09:34:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:34:56,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:34:56,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:34:56,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:34:56,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:34:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:34:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash 584946138, now seen corresponding path program 1 times [2021-11-07 09:34:56,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:34:56,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702730965] [2021-11-07 09:34:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:56,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:34:56,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:34:56,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497868545] [2021-11-07 09:34:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:56,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:34:56,624 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 09:34:56,627 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 09:34:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:34:57,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:34:57,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:34:57,863 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 09:34:57,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:34:57,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:34:57,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702730965] [2021-11-07 09:34:57,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:34:57,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497868545] [2021-11-07 09:34:57,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497868545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:34:57,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:34:57,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:34:57,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175434543] [2021-11-07 09:34:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:34:57,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:34:57,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:34:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:34:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:34:57,866 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:34:58,143 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2021-11-07 09:34:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:34:58,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:34:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:34:58,149 INFO L225 Difference]: With dead ends: 208 [2021-11-07 09:34:58,149 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 09:34:58,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 147.55ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:34:58,151 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 144 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.61ms IncrementalHoareTripleChecker+Time [2021-11-07 09:34:58,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 457 Invalid, 39 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 170.61ms Time] [2021-11-07 09:34:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 09:34:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2021-11-07 09:34:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-11-07 09:34:58,160 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 41 [2021-11-07 09:34:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:34:58,161 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-11-07 09:34:58,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-11-07 09:34:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:34:58,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:34:58,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:34:58,191 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 09:34:58,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:58,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:34:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:34:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash 976385498, now seen corresponding path program 1 times [2021-11-07 09:34:58,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:34:58,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283634573] [2021-11-07 09:34:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:58,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:34:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:34:58,951 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 09:34:58,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:34:58,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283634573] [2021-11-07 09:34:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283634573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:34:58,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:34:58,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:34:58,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420949612] [2021-11-07 09:34:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:34:58,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:34:58,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:34:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:34:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:34:58,953 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:01,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:03,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:04,071 INFO L93 Difference]: Finished difference Result 184 states and 214 transitions. [2021-11-07 09:35:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:35:04,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 09:35:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:04,073 INFO L225 Difference]: With dead ends: 184 [2021-11-07 09:35:04,073 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 09:35:04,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 584.27ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:35:04,074 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 284 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4434.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4705.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:04,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 415 Invalid, 103 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 4705.96ms Time] [2021-11-07 09:35:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 09:35:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2021-11-07 09:35:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2021-11-07 09:35:04,082 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 45 [2021-11-07 09:35:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:04,083 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2021-11-07 09:35:04,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2021-11-07 09:35:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:35:04,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:04,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:04,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:35:04,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -829052836, now seen corresponding path program 1 times [2021-11-07 09:35:04,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:04,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943290826] [2021-11-07 09:35:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:04,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:04,386 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 09:35:04,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:04,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943290826] [2021-11-07 09:35:04,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943290826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:04,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:04,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:04,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153507969] [2021-11-07 09:35:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:04,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:04,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:04,387 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:04,490 INFO L93 Difference]: Finished difference Result 181 states and 213 transitions. [2021-11-07 09:35:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 09:35:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:04,491 INFO L225 Difference]: With dead ends: 181 [2021-11-07 09:35:04,491 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 09:35:04,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:04,493 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:04,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 169 Invalid, 20 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 67.15ms Time] [2021-11-07 09:35:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 09:35:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-07 09:35:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-07 09:35:04,500 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 45 [2021-11-07 09:35:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:04,500 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-07 09:35:04,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-07 09:35:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 09:35:04,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:04,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:04,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:35:04,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash 99946677, now seen corresponding path program 1 times [2021-11-07 09:35:04,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:04,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264794766] [2021-11-07 09:35:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:04,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:04,848 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 09:35:04,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:04,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264794766] [2021-11-07 09:35:04,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264794766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:04,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:04,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:04,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520089031] [2021-11-07 09:35:04,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:04,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:04,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:04,851 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:06,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:09,013 WARN L515 Checker$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 09:35:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:09,628 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2021-11-07 09:35:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:35:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 09:35:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:09,630 INFO L225 Difference]: With dead ends: 178 [2021-11-07 09:35:09,630 INFO L226 Difference]: Without dead ends: 108 [2021-11-07 09:35:09,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 358.06ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:35:09,631 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 70 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4241.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4517.29ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:09,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 241 Invalid, 52 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 4517.29ms Time] [2021-11-07 09:35:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-07 09:35:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-07 09:35:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-11-07 09:35:09,638 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 47 [2021-11-07 09:35:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:09,639 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-11-07 09:35:09,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-11-07 09:35:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 09:35:09,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:09,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:09,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:35:09,641 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -416077786, now seen corresponding path program 1 times [2021-11-07 09:35:09,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:09,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098580757] [2021-11-07 09:35:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:09,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:10,394 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 09:35:10,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:10,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098580757] [2021-11-07 09:35:10,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098580757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:10,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:10,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:10,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060434418] [2021-11-07 09:35:10,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:10,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:10,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:10,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:10,396 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:10,533 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2021-11-07 09:35:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 09:35:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:10,535 INFO L225 Difference]: With dead ends: 193 [2021-11-07 09:35:10,535 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 09:35:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:10,536 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 2 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.94ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 247 Invalid, 27 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 94.94ms Time] [2021-11-07 09:35:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 09:35:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-11-07 09:35:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.108910891089109) internal successors, (112), 103 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-11-07 09:35:10,542 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 48 [2021-11-07 09:35:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:10,542 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-11-07 09:35:10,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-11-07 09:35:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 09:35:10,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:10,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:10,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:35:10,547 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1407256250, now seen corresponding path program 1 times [2021-11-07 09:35:10,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:10,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846776230] [2021-11-07 09:35:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:10,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:10,606 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:10,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102446058] [2021-11-07 09:35:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:10,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:10,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:10,607 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 09:35:10,609 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 09:35:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:12,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-07 09:35:12,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:12,712 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 09:35:13,307 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-07 09:35:13,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-07 09:35:14,285 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-07 09:35:14,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 09:35:15,199 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-07 09:35:15,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-07 09:35:16,592 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-07 09:35:16,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-07 09:35:17,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-07 09:35:17,702 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-07 09:35:17,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-07 09:35:19,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 09:35:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:35:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:35:38,381 INFO L354 Elim1Store]: treesize reduction 164, result has 28.4 percent of original size [2021-11-07 09:35:38,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 101 treesize of output 145 [2021-11-07 09:35:38,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2021-11-07 09:35:38,982 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:35:38,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2021-11-07 09:35:39,051 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:35:39,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 48 [2021-11-07 09:35:46,182 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-07 09:35:46,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 88 [2021-11-07 09:35:46,243 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:35:46,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 64 [2021-11-07 09:35:46,298 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:35:46,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2021-11-07 09:35:51,189 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-07 09:35:51,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2021-11-07 09:35:51,380 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 09:35:51,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:51,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:51,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846776230] [2021-11-07 09:35:51,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:51,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102446058] [2021-11-07 09:35:51,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102446058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:51,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:35:51,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087669040] [2021-11-07 09:35:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:35:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:35:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2021-11-07 09:35:51,382 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:53,432 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 09:35:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:58,049 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-07 09:35:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:35:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 09:35:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:58,050 INFO L225 Difference]: With dead ends: 140 [2021-11-07 09:35:58,050 INFO L226 Difference]: Without dead ends: 138 [2021-11-07 09:35:58,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 16268.61ms TimeCoverageRelationStatistics Valid=52, Invalid=288, Unknown=2, NotChecked=0, Total=342 [2021-11-07 09:35:58,051 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 66 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2188.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 2340.88ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:58,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 698 Invalid, 126 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 1 Unknown, 96 Unchecked, 2340.88ms Time] [2021-11-07 09:35:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-07 09:35:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2021-11-07 09:35:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 114 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2021-11-07 09:35:58,063 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 54 [2021-11-07 09:35:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:58,065 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2021-11-07 09:35:58,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2021-11-07 09:35:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 09:35:58,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:58,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:58,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:58,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 09:35:58,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2107629346, now seen corresponding path program 1 times [2021-11-07 09:35:58,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:58,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193397463] [2021-11-07 09:35:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:58,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:58,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:58,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566809950] [2021-11-07 09:35:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:58,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:58,336 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 09:35:58,337 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 09:35:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:59,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 09:35:59,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:59,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:59,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:59,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193397463] [2021-11-07 09:35:59,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:59,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566809950] [2021-11-07 09:35:59,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566809950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:59,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:59,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:35:59,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445586556] [2021-11-07 09:35:59,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:59,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:35:59,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:59,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:35:59,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:35:59,303 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:59,698 INFO L93 Difference]: Finished difference Result 255 states and 271 transitions. [2021-11-07 09:35:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:35:59,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 09:35:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:59,700 INFO L225 Difference]: With dead ends: 255 [2021-11-07 09:35:59,700 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 09:35:59,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 223.33ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:35:59,701 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 74 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.73ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:59,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 625 Invalid, 60 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 242.73ms Time] [2021-11-07 09:35:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 09:35:59,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2021-11-07 09:35:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 81 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2021-11-07 09:35:59,708 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 56 [2021-11-07 09:35:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:59,708 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2021-11-07 09:35:59,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2021-11-07 09:35:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 09:35:59,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:59,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:59,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:35:59,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:59,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1934306021, now seen corresponding path program 1 times [2021-11-07 09:35:59,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:59,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169481459] [2021-11-07 09:35:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:59,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:59,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:59,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092195831] [2021-11-07 09:35:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:59,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:59,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:59,993 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 09:35:59,995 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 09:36:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:36:01,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 175 conjunts are in the unsatisfiable core [2021-11-07 09:36:01,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:36:01,840 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 09:36:02,278 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-07 09:36:02,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-07 09:36:03,120 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-07 09:36:03,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 09:36:03,815 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-07 09:36:03,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-07 09:36:04,923 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-07 09:36:04,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-07 09:36:05,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-07 09:36:06,040 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-07 09:36:06,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-07 09:36:07,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 09:36:26,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:26,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:26,910 INFO L354 Elim1Store]: treesize reduction 164, result has 24.4 percent of original size [2021-11-07 09:36:26,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 101 treesize of output 133 [2021-11-07 09:36:27,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2021-11-07 09:36:27,636 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:36:27,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 91 [2021-11-07 09:36:27,696 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:36:27,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 60 [2021-11-07 09:36:35,195 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-07 09:36:35,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 96 [2021-11-07 09:36:35,256 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:36:35,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 72 [2021-11-07 09:36:35,313 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:36:35,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 57 [2021-11-07 09:36:42,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-07 09:36:42,940 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 09:36:42,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-07 09:36:43,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-07 09:36:43,552 INFO L354 Elim1Store]: treesize reduction 276, result has 17.1 percent of original size [2021-11-07 09:36:43,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 156 treesize of output 188 [2021-11-07 09:36:43,625 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-07 09:36:43,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 171 [2021-11-07 09:36:43,689 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-07 09:36:43,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 152 [2021-11-07 09:36:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 43 [2021-11-07 09:36:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:36:44,909 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-07 09:36:44,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 57 [2021-11-07 09:36:51,254 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 141 treesize of output 117 [2021-11-07 09:36:51,909 INFO L354 Elim1Store]: treesize reduction 511, result has 14.4 percent of original size [2021-11-07 09:36:51,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 150 [2021-11-07 09:36:51,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 138 [2021-11-07 09:36:52,479 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 09:36:52,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:36:52,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:36:52,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169481459] [2021-11-07 09:36:52,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:36:52,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092195831] [2021-11-07 09:36:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092195831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:36:52,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:36:52,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 09:36:52,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863145258] [2021-11-07 09:36:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:36:52,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 09:36:52,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:36:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 09:36:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=292, Unknown=3, NotChecked=0, Total=342 [2021-11-07 09:36:52,481 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:36:54,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:36:56,751 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 09:37:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:37:04,013 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2021-11-07 09:37:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 09:37:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 09:37:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:37:04,014 INFO L225 Difference]: With dead ends: 97 [2021-11-07 09:37:04,014 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 09:37:04,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 24247.59ms TimeCoverageRelationStatistics Valid=56, Invalid=360, Unknown=4, NotChecked=0, Total=420 [2021-11-07 09:37:04,015 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 47 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4300.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 4591.72ms IncrementalHoareTripleChecker+Time [2021-11-07 09:37:04,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 712 Invalid, 188 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 2 Unknown, 145 Unchecked, 4591.72ms Time] [2021-11-07 09:37:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 09:37:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2021-11-07 09:37:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:37:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-11-07 09:37:04,022 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 57 [2021-11-07 09:37:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:37:04,022 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-11-07 09:37:04,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:37:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-11-07 09:37:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:37:04,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:37:04,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:37:04,059 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 09:37:04,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:37:04,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:37:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:37:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 333267831, now seen corresponding path program 1 times [2021-11-07 09:37:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:37:04,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233051641] [2021-11-07 09:37:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:37:04,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:37:04,298 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:37:04,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100795621] [2021-11-07 09:37:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:37:04,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:37:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:37:04,300 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 09:37:04,301 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 09:37:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:37:06,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-07 09:37:06,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:37:06,428 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 09:37:07,298 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-07 09:37:07,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-07 09:37:08,437 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-07 09:37:08,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 09:37:09,463 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-07 09:37:09,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-07 09:37:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:37:10,629 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-07 09:37:10,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-07 09:37:11,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-07 09:37:11,705 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-07 09:37:11,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-07 09:37:30,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:37:31,069 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-07 09:37:31,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-07 09:37:31,992 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:37:31,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-07 09:37:32,407 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:37:32,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-07 09:37:33,224 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 09:37:33,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:37:33,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:37:33,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233051641] [2021-11-07 09:37:33,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:37:33,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100795621] [2021-11-07 09:37:33,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100795621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:37:33,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:37:33,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:37:33,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383255305] [2021-11-07 09:37:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:37:33,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:37:33,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:37:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:37:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:37:33,226 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:37:35,274 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 09:37:37,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:37:39,580 WARN L515 Checker$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 09:37:41,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:37:43,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:37:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:37:45,683 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2021-11-07 09:37:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:37:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 09:37:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:37:45,685 INFO L225 Difference]: With dead ends: 105 [2021-11-07 09:37:45,685 INFO L226 Difference]: Without dead ends: 96 [2021-11-07 09:37:45,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2923.69ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:37:45,686 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 158 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10559.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 11459.03ms IncrementalHoareTripleChecker+Time [2021-11-07 09:37:45,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 546 Invalid, 229 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 5 Unknown, 93 Unchecked, 11459.03ms Time] [2021-11-07 09:37:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-07 09:37:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2021-11-07 09:37:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:37:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2021-11-07 09:37:45,694 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 61 [2021-11-07 09:37:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:37:45,695 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2021-11-07 09:37:45,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:37:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2021-11-07 09:37:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 09:37:45,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:37:45,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:37:45,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 09:37:45,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 09:37:45,915 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:37:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:37:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1712829942, now seen corresponding path program 1 times [2021-11-07 09:37:45,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:37:45,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896876687] [2021-11-07 09:37:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:37:45,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:37:45,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:37:45,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241082739] [2021-11-07 09:37:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:37:45,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:37:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:37:45,984 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 09:37:45,985 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 09:37:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:37:47,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-07 09:37:47,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:37:47,731 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 09:37:48,294 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-07 09:37:48,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-07 09:37:49,265 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-07 09:37:49,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 09:37:50,151 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-07 09:37:50,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-07 09:37:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:37:51,103 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-07 09:37:51,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-07 09:37:51,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-07 09:37:52,018 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-07 09:37:52,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-07 09:38:07,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:38:08,112 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-07 09:38:08,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-07 09:38:09,314 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:38:09,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-11-07 09:38:09,910 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:38:09,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-07 09:38:10,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-07 09:38:10,784 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-07 09:38:10,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2021-11-07 09:38:11,479 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 09:38:11,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:38:11,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:38:11,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896876687] [2021-11-07 09:38:11,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:38:11,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241082739] [2021-11-07 09:38:11,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241082739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:38:11,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:38:11,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 09:38:11,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718907368] [2021-11-07 09:38:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:38:11,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 09:38:11,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:38:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 09:38:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:38:11,482 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:38:13,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:38:15,685 WARN L515 Checker$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 09:38:17,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:38:19,889 WARN L515 Checker$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 09:38:22,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:38:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:38:24,472 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-11-07 09:38:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 09:38:24,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 09:38:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:38:24,474 INFO L225 Difference]: With dead ends: 105 [2021-11-07 09:38:24,474 INFO L226 Difference]: Without dead ends: 96 [2021-11-07 09:38:24,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3931.35ms TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:38:24,475 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 155 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10487.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 11189.67ms IncrementalHoareTripleChecker+Time [2021-11-07 09:38:24,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 606 Invalid, 274 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 5 Unknown, 149 Unchecked, 11189.67ms Time] [2021-11-07 09:38:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-07 09:38:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2021-11-07 09:38:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.054054054054054) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:38:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-11-07 09:38:24,484 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 64 [2021-11-07 09:38:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:38:24,484 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-11-07 09:38:24,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:38:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-11-07 09:38:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 09:38:24,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:38:24,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:38:24,525 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 09:38:24,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:38:24,690 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:38:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:38:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1974082857, now seen corresponding path program 1 times [2021-11-07 09:38:24,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:38:24,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508837689] [2021-11-07 09:38:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:38:24,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:38:24,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:38:24,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471537879] [2021-11-07 09:38:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:38:24,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:38:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:38:24,779 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 09:38:24,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15