./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:57:33,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:57:33,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:57:33,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:57:33,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:57:33,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:57:33,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:57:33,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:57:33,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:57:33,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:57:33,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:57:33,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:57:33,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:57:33,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:57:33,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:57:33,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:57:33,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:57:33,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:57:33,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:57:33,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:57:33,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:57:33,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:57:33,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:57:33,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:57:33,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:57:33,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:57:33,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:57:33,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:57:33,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:57:33,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:57:33,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:57:33,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:57:33,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:57:33,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:57:33,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:57:33,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:57:33,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:57:33,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:57:33,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:57:33,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:57:33,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:57:33,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:57:33,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:57:33,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:57:33,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:57:33,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:57:33,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:57:33,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:57:33,429 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:57:33,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:57:33,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:57:33,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:57:33,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:57:33,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:57:33,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:57:33,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:57:33,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:57:33,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:57:33,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:57:33,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:57:33,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:57:33,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:57:33,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:57:33,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:57:33,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:57:33,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:57:33,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:57:33,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:57:33,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:57:33,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:57:33,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:57:33,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-06 10:57:33,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:57:33,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:57:33,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:57:33,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:57:33,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:57:33,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-06 10:57:33,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aae1c62e/22c44b14c56c4c44b904028a4937b8af/FLAG8419d3b8c [2021-11-06 10:57:34,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:57:34,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-06 10:57:34,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aae1c62e/22c44b14c56c4c44b904028a4937b8af/FLAG8419d3b8c [2021-11-06 10:57:34,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aae1c62e/22c44b14c56c4c44b904028a4937b8af [2021-11-06 10:57:34,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:57:34,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:57:34,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:57:34,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:57:34,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:57:34,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:34" (1/1) ... [2021-11-06 10:57:34,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b06a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:34, skipping insertion in model container [2021-11-06 10:57:34,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:34" (1/1) ... [2021-11-06 10:57:34,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:57:34,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:57:34,872 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-06 10:57:34,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-06 10:57:34,902 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:57:34,907 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:57:35,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,643 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,643 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,655 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:35,917 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:57:35,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:57:35,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:57:35,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:57:35,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:57:35,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:57:35,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:57:35,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:57:35,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:57:35,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:57:36,047 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:57:36,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:57:36,502 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:57:36,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-06 10:57:36,524 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-06 10:57:36,525 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:57:36,526 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:57:36,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,563 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,564 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:57:36,593 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:57:36,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:57:36,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:57:36,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:57:36,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:57:36,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:57:36,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:57:36,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:57:36,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:57:36,617 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:57:36,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,720 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:57:36,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:57:37,054 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:57:37,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37 WrapperNode [2021-11-06 10:57:37,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:57:37,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:57:37,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:57:37,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:57:37,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:57:37,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:57:37,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:57:37,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:57:37,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:57:37,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:57:37,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:57:37,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:57:37,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (1/1) ... [2021-11-06 10:57:37,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:57:37,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:57:37,435 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) [2021-11-06 10:57:37,461 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 [2021-11-06 10:57:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 10:57:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:57:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 10:57:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:57:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:57:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:57:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:57:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:57:46,146 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !true; [2021-11-06 10:57:46,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:57:46,154 INFO L299 CfgBuilder]: Removed 157 assume(true) statements. [2021-11-06 10:57:46,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:46 BoogieIcfgContainer [2021-11-06 10:57:46,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:57:46,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:57:46,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:57:46,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:57:46,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:34" (1/3) ... [2021-11-06 10:57:46,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d834e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:46, skipping insertion in model container [2021-11-06 10:57:46,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:37" (2/3) ... [2021-11-06 10:57:46,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d834e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:46, skipping insertion in model container [2021-11-06 10:57:46,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:46" (3/3) ... [2021-11-06 10:57:46,163 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-06 10:57:46,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:57:46,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 10:57:46,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:57:46,239 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 [2021-11-06 10:57:46,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 10:57:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 10:57:46,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:46,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:46,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1999182466, now seen corresponding path program 1 times [2021-11-06 10:57:46,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:46,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493417430] [2021-11-06 10:57:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:46,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:46,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:46,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493417430] [2021-11-06 10:57:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493417430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:46,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:46,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:57:46,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908362321] [2021-11-06 10:57:46,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:57:46,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:57:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:57:46,851 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:57:46,880 INFO L93 Difference]: Finished difference Result 399 states and 562 transitions. [2021-11-06 10:57:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:57:46,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 10:57:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:57:46,890 INFO L225 Difference]: With dead ends: 399 [2021-11-06 10:57:46,890 INFO L226 Difference]: Without dead ends: 195 [2021-11-06 10:57:46,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:57:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-06 10:57:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-06 10:57:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 194 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-06 10:57:46,930 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 62 [2021-11-06 10:57:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:57:46,931 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-06 10:57:46,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-06 10:57:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 10:57:46,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:46,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:46,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:57:46,934 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 312696489, now seen corresponding path program 1 times [2021-11-06 10:57:46,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:46,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726221056] [2021-11-06 10:57:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:47,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:57:47,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688284961] [2021-11-06 10:57:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:47,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:57:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:57:47,065 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) [2021-11-06 10:57:47,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:57:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 10:57:47,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:57:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:48,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:48,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726221056] [2021-11-06 10:57:48,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:57:48,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688284961] [2021-11-06 10:57:48,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688284961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:48,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:48,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:57:48,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950501486] [2021-11-06 10:57:48,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:57:48,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:48,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:57:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:57:48,678 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:57:49,274 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-11-06 10:57:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:57:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 10:57:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:57:49,277 INFO L225 Difference]: With dead ends: 278 [2021-11-06 10:57:49,277 INFO L226 Difference]: Without dead ends: 196 [2021-11-06 10:57:49,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:57:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-06 10:57:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-06 10:57:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 194 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 255 transitions. [2021-11-06 10:57:49,290 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 255 transitions. Word has length 65 [2021-11-06 10:57:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:57:49,291 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 255 transitions. [2021-11-06 10:57:49,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 255 transitions. [2021-11-06 10:57:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 10:57:49,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:49,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:49,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:57:49,507 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 [2021-11-06 10:57:49,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1103415697, now seen corresponding path program 1 times [2021-11-06 10:57:49,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:49,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759958207] [2021-11-06 10:57:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:49,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:49,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:57:49,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017403229] [2021-11-06 10:57:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:49,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:57:49,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:57:49,596 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) [2021-11-06 10:57:49,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 10:57:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:50,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 10:57:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:57:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:50,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:50,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759958207] [2021-11-06 10:57:50,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:57:50,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017403229] [2021-11-06 10:57:50,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017403229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:50,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:50,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:57:50,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642269696] [2021-11-06 10:57:50,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:57:50,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:57:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:57:50,766 INFO L87 Difference]: Start difference. First operand 195 states and 255 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:50,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:57:50,932 INFO L93 Difference]: Finished difference Result 547 states and 721 transitions. [2021-11-06 10:57:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:57:50,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-06 10:57:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:57:50,936 INFO L225 Difference]: With dead ends: 547 [2021-11-06 10:57:50,937 INFO L226 Difference]: Without dead ends: 374 [2021-11-06 10:57:50,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:57:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-06 10:57:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 201. [2021-11-06 10:57:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.3384615384615384) internal successors, (261), 200 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 261 transitions. [2021-11-06 10:57:50,968 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 261 transitions. Word has length 66 [2021-11-06 10:57:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:57:50,969 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 261 transitions. [2021-11-06 10:57:50,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 261 transitions. [2021-11-06 10:57:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 10:57:50,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:50,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:51,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 10:57:51,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-06 10:57:51,192 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -554146415, now seen corresponding path program 1 times [2021-11-06 10:57:51,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:51,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057625357] [2021-11-06 10:57:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:51,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:51,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:51,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057625357] [2021-11-06 10:57:51,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057625357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:51,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:51,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:57:51,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529626571] [2021-11-06 10:57:51,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:57:51,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:51,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:57:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:57:51,681 INFO L87 Difference]: Start difference. First operand 201 states and 261 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:57:57,194 INFO L93 Difference]: Finished difference Result 405 states and 529 transitions. [2021-11-06 10:57:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:57:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 10:57:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:57:57,196 INFO L225 Difference]: With dead ends: 405 [2021-11-06 10:57:57,196 INFO L226 Difference]: Without dead ends: 242 [2021-11-06 10:57:57,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:57:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-06 10:57:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 219. [2021-11-06 10:57:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.3286384976525822) internal successors, (283), 218 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2021-11-06 10:57:57,214 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 70 [2021-11-06 10:57:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:57:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2021-11-06 10:57:57,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2021-11-06 10:57:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 10:57:57,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:57,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:57,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:57:57,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 875542541, now seen corresponding path program 1 times [2021-11-06 10:57:57,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:57,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352863239] [2021-11-06 10:57:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:57,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:57,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352863239] [2021-11-06 10:57:57,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352863239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:57,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:57,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:57:57,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753118197] [2021-11-06 10:57:57,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:57:57,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:57:57,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:57:57,541 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:57:57,720 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2021-11-06 10:57:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:57:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 10:57:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:57:57,722 INFO L225 Difference]: With dead ends: 401 [2021-11-06 10:57:57,722 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:57:57,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:57:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:57:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:57:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.3080568720379147) internal successors, (276), 216 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 276 transitions. [2021-11-06 10:57:57,734 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 276 transitions. Word has length 70 [2021-11-06 10:57:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:57:57,734 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 276 transitions. [2021-11-06 10:57:57,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:57:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 276 transitions. [2021-11-06 10:57:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:57:57,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:57:57,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:57:57,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:57:57,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:57:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:57:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -162792069, now seen corresponding path program 1 times [2021-11-06 10:57:57,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:57:57,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637149024] [2021-11-06 10:57:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:57:57,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:57:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:57:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:57:58,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:57:58,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637149024] [2021-11-06 10:57:58,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637149024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:57:58,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:57:58,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:57:58,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027131561] [2021-11-06 10:57:58,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:57:58,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:57:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:57:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:57:58,083 INFO L87 Difference]: Start difference. First operand 217 states and 276 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:58:03,168 INFO L93 Difference]: Finished difference Result 403 states and 516 transitions. [2021-11-06 10:58:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:58:03,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 10:58:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:58:03,170 INFO L225 Difference]: With dead ends: 403 [2021-11-06 10:58:03,170 INFO L226 Difference]: Without dead ends: 223 [2021-11-06 10:58:03,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:58:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-06 10:58:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2021-11-06 10:58:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2748815165876777) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-06 10:58:03,184 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 74 [2021-11-06 10:58:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:58:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-06 10:58:03,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-06 10:58:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:58:03,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:58:03,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:58:03,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:58:03,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:58:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:58:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 523765980, now seen corresponding path program 1 times [2021-11-06 10:58:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:58:03,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701951729] [2021-11-06 10:58:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:58:03,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:58:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:58:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:58:04,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:58:04,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701951729] [2021-11-06 10:58:04,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701951729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:58:04,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:58:04,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:58:04,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898240961] [2021-11-06 10:58:04,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:58:04,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:58:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:58:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:58:04,075 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:58:09,312 INFO L93 Difference]: Finished difference Result 300 states and 376 transitions. [2021-11-06 10:58:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:58:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:58:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:58:09,315 INFO L225 Difference]: With dead ends: 300 [2021-11-06 10:58:09,315 INFO L226 Difference]: Without dead ends: 218 [2021-11-06 10:58:09,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:58:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-06 10:58:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-06 10:58:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 216 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 268 transitions. [2021-11-06 10:58:09,325 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 268 transitions. Word has length 76 [2021-11-06 10:58:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:58:09,326 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 268 transitions. [2021-11-06 10:58:09,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 268 transitions. [2021-11-06 10:58:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 10:58:09,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:58:09,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:58:09,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:58:09,329 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:58:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:58:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash 477407958, now seen corresponding path program 1 times [2021-11-06 10:58:09,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:58:09,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751781581] [2021-11-06 10:58:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:58:09,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:58:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:58:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:58:10,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:58:10,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751781581] [2021-11-06 10:58:10,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751781581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:58:10,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:58:10,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:58:10,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278050367] [2021-11-06 10:58:10,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:58:10,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:58:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:58:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:58:10,135 INFO L87 Difference]: Start difference. First operand 217 states and 268 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:58:17,764 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2021-11-06 10:58:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:58:17,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 10:58:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:58:17,766 INFO L225 Difference]: With dead ends: 274 [2021-11-06 10:58:17,767 INFO L226 Difference]: Without dead ends: 218 [2021-11-06 10:58:17,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:58:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-06 10:58:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-06 10:58:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-06 10:58:17,777 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 79 [2021-11-06 10:58:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:58:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-06 10:58:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-06 10:58:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:58:17,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:58:17,779 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:58:17,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:58:17,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:58:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:58:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1607773165, now seen corresponding path program 1 times [2021-11-06 10:58:17,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:58:17,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613011612] [2021-11-06 10:58:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:58:17,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:58:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:58:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:58:18,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:58:18,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613011612] [2021-11-06 10:58:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613011612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:58:18,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:58:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:58:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169410772] [2021-11-06 10:58:18,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:58:18,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:58:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:58:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:58:18,110 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:58:20,769 INFO L93 Difference]: Finished difference Result 316 states and 397 transitions. [2021-11-06 10:58:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:58:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:58:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:58:20,772 INFO L225 Difference]: With dead ends: 316 [2021-11-06 10:58:20,772 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:58:20,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:58:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:58:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:58:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2511848341232228) internal successors, (264), 216 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 264 transitions. [2021-11-06 10:58:20,784 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 264 transitions. Word has length 82 [2021-11-06 10:58:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:58:20,784 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 264 transitions. [2021-11-06 10:58:20,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 264 transitions. [2021-11-06 10:58:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:58:20,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:58:20,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:58:20,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:58:20,787 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:58:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:58:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2007135761, now seen corresponding path program 1 times [2021-11-06 10:58:20,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:58:20,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145649989] [2021-11-06 10:58:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:58:20,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:58:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:58:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:58:22,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:58:22,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145649989] [2021-11-06 10:58:22,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145649989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:58:22,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:58:22,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:58:22,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928021899] [2021-11-06 10:58:22,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:58:22,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:58:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:58:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:58:22,878 INFO L87 Difference]: Start difference. First operand 217 states and 264 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:58:44,249 INFO L93 Difference]: Finished difference Result 364 states and 447 transitions. [2021-11-06 10:58:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:58:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:58:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:58:44,251 INFO L225 Difference]: With dead ends: 364 [2021-11-06 10:58:44,251 INFO L226 Difference]: Without dead ends: 237 [2021-11-06 10:58:44,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:58:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-06 10:58:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 220. [2021-11-06 10:58:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 219 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 267 transitions. [2021-11-06 10:58:44,264 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 267 transitions. Word has length 82 [2021-11-06 10:58:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:58:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 267 transitions. [2021-11-06 10:58:44,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:58:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 267 transitions. [2021-11-06 10:58:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:58:44,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:58:44,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:58:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:58:44,266 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:58:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:58:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1722566291, now seen corresponding path program 1 times [2021-11-06 10:58:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:58:44,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47676291] [2021-11-06 10:58:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:58:44,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:58:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:58:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:58:46,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:58:46,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47676291] [2021-11-06 10:58:46,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47676291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:58:46,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:58:46,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:58:46,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201341368] [2021-11-06 10:58:46,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:58:46,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:58:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:58:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:58:46,108 INFO L87 Difference]: Start difference. First operand 220 states and 267 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:10,859 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2021-11-06 10:59:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:59:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:59:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:10,861 INFO L225 Difference]: With dead ends: 369 [2021-11-06 10:59:10,861 INFO L226 Difference]: Without dead ends: 259 [2021-11-06 10:59:10,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:59:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-06 10:59:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2021-11-06 10:59:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2330508474576272) internal successors, (291), 241 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2021-11-06 10:59:10,874 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 82 [2021-11-06 10:59:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:10,874 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2021-11-06 10:59:10,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2021-11-06 10:59:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:59:10,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:10,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:10,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:59:10,876 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 904917841, now seen corresponding path program 1 times [2021-11-06 10:59:10,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:10,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187791911] [2021-11-06 10:59:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:10,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:11,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:11,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187791911] [2021-11-06 10:59:11,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187791911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:11,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:11,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:59:11,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087943894] [2021-11-06 10:59:11,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:59:11,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:59:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:59:11,285 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:14,148 INFO L93 Difference]: Finished difference Result 357 states and 438 transitions. [2021-11-06 10:59:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:59:14,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:59:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:14,150 INFO L225 Difference]: With dead ends: 357 [2021-11-06 10:59:14,150 INFO L226 Difference]: Without dead ends: 242 [2021-11-06 10:59:14,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:59:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-06 10:59:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-06 10:59:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2245762711864407) internal successors, (289), 241 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 289 transitions. [2021-11-06 10:59:14,162 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 289 transitions. Word has length 82 [2021-11-06 10:59:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:14,162 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 289 transitions. [2021-11-06 10:59:14,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 289 transitions. [2021-11-06 10:59:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:59:14,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:14,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:14,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:59:14,164 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1004900463, now seen corresponding path program 1 times [2021-11-06 10:59:14,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:14,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785769721] [2021-11-06 10:59:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:14,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:14,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:59:14,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19695460] [2021-11-06 10:59:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:14,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:14,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:14,268 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) [2021-11-06 10:59:14,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 10:59:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:15,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 10:59:15,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:59:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:15,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:15,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785769721] [2021-11-06 10:59:15,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:59:15,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19695460] [2021-11-06 10:59:15,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19695460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:15,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:15,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:59:15,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366797796] [2021-11-06 10:59:15,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:59:15,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:59:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:59:15,407 INFO L87 Difference]: Start difference. First operand 242 states and 289 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:15,595 INFO L93 Difference]: Finished difference Result 668 states and 799 transitions. [2021-11-06 10:59:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:59:15,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:59:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:15,599 INFO L225 Difference]: With dead ends: 668 [2021-11-06 10:59:15,599 INFO L226 Difference]: Without dead ends: 451 [2021-11-06 10:59:15,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:59:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-06 10:59:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 248. [2021-11-06 10:59:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.21900826446281) internal successors, (295), 247 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2021-11-06 10:59:15,618 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 82 [2021-11-06 10:59:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:15,619 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2021-11-06 10:59:15,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2021-11-06 10:59:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:59:15,620 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:15,620 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:15,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 10:59:15,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:15,821 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -581253741, now seen corresponding path program 1 times [2021-11-06 10:59:15,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:15,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512927508] [2021-11-06 10:59:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:15,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:15,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:59:15,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980721617] [2021-11-06 10:59:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:15,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:15,898 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) [2021-11-06 10:59:15,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 10:59:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:16,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-06 10:59:16,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:59:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:16,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:16,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512927508] [2021-11-06 10:59:16,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:59:16,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980721617] [2021-11-06 10:59:16,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980721617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:16,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:16,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:59:16,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190219109] [2021-11-06 10:59:16,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:59:16,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:59:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:59:16,980 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:17,413 INFO L93 Difference]: Finished difference Result 454 states and 559 transitions. [2021-11-06 10:59:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:59:17,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:59:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:17,415 INFO L225 Difference]: With dead ends: 454 [2021-11-06 10:59:17,415 INFO L226 Difference]: Without dead ends: 324 [2021-11-06 10:59:17,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:59:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-06 10:59:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 207. [2021-11-06 10:59:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 206 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2021-11-06 10:59:17,430 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 82 [2021-11-06 10:59:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:17,431 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2021-11-06 10:59:17,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2021-11-06 10:59:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:59:17,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:17,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:17,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 10:59:17,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:17,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 824198886, now seen corresponding path program 1 times [2021-11-06 10:59:17,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:17,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359042736] [2021-11-06 10:59:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:17,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:19,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:19,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359042736] [2021-11-06 10:59:19,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359042736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:19,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:19,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:59:19,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085374949] [2021-11-06 10:59:19,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:59:19,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:59:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:59:19,565 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:49,025 INFO L93 Difference]: Finished difference Result 451 states and 555 transitions. [2021-11-06 10:59:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:59:49,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:59:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:49,027 INFO L225 Difference]: With dead ends: 451 [2021-11-06 10:59:49,027 INFO L226 Difference]: Without dead ends: 357 [2021-11-06 10:59:49,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 10:59:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-06 10:59:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 256. [2021-11-06 10:59:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.212) internal successors, (303), 255 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2021-11-06 10:59:49,045 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 85 [2021-11-06 10:59:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:49,045 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2021-11-06 10:59:49,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2021-11-06 10:59:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:59:49,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:49,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:49,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:59:49,046 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1042354789, now seen corresponding path program 1 times [2021-11-06 10:59:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:49,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394403743] [2021-11-06 10:59:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:49,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:51,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:51,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394403743] [2021-11-06 10:59:51,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394403743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:59:51,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876896495] [2021-11-06 10:59:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:51,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:51,769 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) [2021-11-06 10:59:51,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 10:59:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 10:59:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:59:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:59:53,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876896495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:53,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 10:59:53,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2021-11-06 10:59:53,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819121426] [2021-11-06 10:59:53,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:59:53,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:59:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:59:53,192 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:53,385 INFO L93 Difference]: Finished difference Result 488 states and 578 transitions. [2021-11-06 10:59:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:59:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 10:59:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:53,394 INFO L225 Difference]: With dead ends: 488 [2021-11-06 10:59:53,394 INFO L226 Difference]: Without dead ends: 256 [2021-11-06 10:59:53,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:59:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-06 10:59:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2021-11-06 10:59:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.1991701244813278) internal successors, (289), 246 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 289 transitions. [2021-11-06 10:59:53,433 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 289 transitions. Word has length 86 [2021-11-06 10:59:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:53,434 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 289 transitions. [2021-11-06 10:59:53,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:59:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 289 transitions. [2021-11-06 10:59:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 10:59:53,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:53,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:59:53,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 10:59:53,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 10:59:53,664 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 10:59:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 69711058, now seen corresponding path program 1 times [2021-11-06 10:59:53,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:53,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276924646] [2021-11-06 10:59:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:53,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:53,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:59:53,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5537628] [2021-11-06 10:59:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:53,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:53,741 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) [2021-11-06 10:59:53,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 10:59:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:54,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-06 10:59:54,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:59:55,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-06 10:59:55,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-06 10:59:57,152 INFO L354 Elim1Store]: treesize reduction 228, result has 4.6 percent of original size [2021-11-06 10:59:57,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 107 [2021-11-06 10:59:57,242 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-06 10:59:57,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 93 [2021-11-06 10:59:57,298 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-06 10:59:57,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 92 treesize of output 84 [2021-11-06 10:59:58,020 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-11-06 10:59:58,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 96 [2021-11-06 10:59:58,104 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-06 10:59:58,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 66 [2021-11-06 10:59:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:58,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:58,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276924646] [2021-11-06 10:59:58,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:59:58,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5537628] [2021-11-06 10:59:58,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5537628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:58,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:58,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:59:58,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312954228] [2021-11-06 10:59:58,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:59:58,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:59:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:59:58,383 INFO L87 Difference]: Start difference. First operand 247 states and 289 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:00:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:16,896 INFO L93 Difference]: Finished difference Result 344 states and 414 transitions. [2021-11-06 11:00:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:00:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 11:00:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:16,899 INFO L225 Difference]: With dead ends: 344 [2021-11-06 11:00:16,899 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 11:00:16,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 11:00:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 11:00:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 195. [2021-11-06 11:00:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 194 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:00:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-11-06 11:00:16,915 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 91 [2021-11-06 11:00:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:16,915 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-11-06 11:00:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:00:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-11-06 11:00:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 11:00:16,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:16,917 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:00:16,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 11:00:17,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 11:00:17,120 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 11:00:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash -52578388, now seen corresponding path program 1 times [2021-11-06 11:00:17,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:17,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73855483] [2021-11-06 11:00:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:17,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:17,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:00:17,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396295681] [2021-11-06 11:00:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:17,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:00:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:00:17,208 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) [2021-11-06 11:00:17,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:02:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:02:49,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 240 conjunts are in the unsatisfiable core [2021-11-06 11:02:49,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:02:49,952 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 [2021-11-06 11:02:50,461 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-06 11:02:50,461 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 [2021-11-06 11:02:51,390 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-06 11:02:51,390 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 [2021-11-06 11:02:52,222 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-06 11:02:52,222 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 [2021-11-06 11:02:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:02:53,468 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-06 11:02:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-06 11:02:54,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 77 [2021-11-06 11:02:54,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-11-06 11:02:54,395 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-06 11:02:54,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 75 treesize of output 92 [2021-11-06 11:02:55,828 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 [2021-11-06 11:03:15,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:03:15,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:03:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:03:16,220 INFO L354 Elim1Store]: treesize reduction 120, result has 44.7 percent of original size [2021-11-06 11:03:16,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 93 treesize of output 169 [2021-11-06 11:03:17,180 INFO L354 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2021-11-06 11:03:17,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 94 [2021-11-06 11:03:17,264 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-06 11:03:17,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 75 [2021-11-06 11:03:17,325 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-06 11:03:17,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 56 [2021-11-06 11:03:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:03:24,973 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-06 11:03:24,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 102 [2021-11-06 11:03:25,054 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:03:25,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 71 [2021-11-06 11:03:25,131 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:03:25,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 60 [2021-11-06 11:03:45,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 11:03:48,302 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-06 11:03:48,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 86 [2021-11-06 11:03:48,385 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-06 11:03:48,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 90 [2021-11-06 11:03:48,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:03:48,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2021-11-06 11:03:50,411 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:03:50,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-11-06 11:03:51,341 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:03:51,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-06 11:03:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:03:51,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:03:51,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73855483] [2021-11-06 11:03:51,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:03:51,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396295681] [2021-11-06 11:03:51,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396295681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:03:51,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:03:51,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-06 11:03:51,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570276175] [2021-11-06 11:03:51,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-06 11:03:51,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:03:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-06 11:03:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=783, Unknown=4, NotChecked=0, Total=870 [2021-11-06 11:03:51,675 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:42,666 WARN L207 SmtUtils]: Spent 8.45 s on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-11-06 11:05:12,592 WARN L207 SmtUtils]: Spent 8.47 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-11-06 11:05:21,923 WARN L207 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-11-06 11:05:35,107 WARN L207 SmtUtils]: Spent 12.73 s on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-11-06 11:05:44,025 WARN L207 SmtUtils]: Spent 8.63 s on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2021-11-06 11:05:57,010 WARN L207 SmtUtils]: Spent 12.73 s on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2021-11-06 11:06:06,330 WARN L207 SmtUtils]: Spent 8.70 s on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2021-11-06 11:06:19,606 WARN L207 SmtUtils]: Spent 13.00 s on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2021-11-06 11:06:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:29,511 INFO L93 Difference]: Finished difference Result 538 states and 658 transitions. [2021-11-06 11:06:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 11:06:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 11:06:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:29,515 INFO L225 Difference]: With dead ends: 538 [2021-11-06 11:06:29,515 INFO L226 Difference]: Without dead ends: 435 [2021-11-06 11:06:29,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 145.1s TimeCoverageRelationStatistics Valid=328, Invalid=2418, Unknown=10, NotChecked=0, Total=2756 [2021-11-06 11:06:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-06 11:06:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 225. [2021-11-06 11:06:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.1963470319634704) internal successors, (262), 224 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2021-11-06 11:06:29,542 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 94 [2021-11-06 11:06:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:29,542 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2021-11-06 11:06:29,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2021-11-06 11:06:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 11:06:29,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:29,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:29,765 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2021-11-06 11:06:29,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2021-11-06 11:06:29,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:06:29,804 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 11:06:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash -21691158, now seen corresponding path program 1 times [2021-11-06 11:06:29,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:29,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348892175] [2021-11-06 11:06:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:29,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:29,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:06:29,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925961822] [2021-11-06 11:06:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:29,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:06:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:06:29,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:06:29,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 11:06:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:31,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-06 11:06:31,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:06:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:31,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-06 11:06:31,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:31,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-06 11:06:33,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:33,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:33,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,482 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-06 11:06:34,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 197 [2021-11-06 11:06:34,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:34,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,042 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-06 11:06:35,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 222 [2021-11-06 11:06:35,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,315 INFO L354 Elim1Store]: treesize reduction 196, result has 15.9 percent of original size [2021-11-06 11:06:35,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 207 treesize of output 226 [2021-11-06 11:06:35,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:35,570 INFO L354 Elim1Store]: treesize reduction 184, result has 16.7 percent of original size [2021-11-06 11:06:35,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 214 treesize of output 228 [2021-11-06 11:06:36,819 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-11-06 11:06:36,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 76 [2021-11-06 11:06:36,913 INFO L354 Elim1Store]: treesize reduction 17, result has 41.4 percent of original size [2021-11-06 11:06:36,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 60 [2021-11-06 11:06:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:37,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:37,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348892175] [2021-11-06 11:06:37,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:06:37,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925961822] [2021-11-06 11:06:37,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925961822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:37,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:37,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 11:06:37,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810243780] [2021-11-06 11:06:37,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 11:06:37,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 11:06:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:06:37,154 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:59,835 INFO L93 Difference]: Finished difference Result 307 states and 365 transitions. [2021-11-06 11:06:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 11:06:59,836 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 11:06:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:59,837 INFO L225 Difference]: With dead ends: 307 [2021-11-06 11:06:59,837 INFO L226 Difference]: Without dead ends: 239 [2021-11-06 11:06:59,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2021-11-06 11:06:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-06 11:06:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 225. [2021-11-06 11:06:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.1917808219178083) internal successors, (261), 224 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 261 transitions. [2021-11-06 11:06:59,860 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 261 transitions. Word has length 94 [2021-11-06 11:06:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:59,860 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 261 transitions. [2021-11-06 11:06:59,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 261 transitions. [2021-11-06 11:06:59,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 11:06:59,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:59,861 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:59,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 11:07:00,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:07:00,064 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 11:07:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1847424559, now seen corresponding path program 1 times [2021-11-06 11:07:00,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:00,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580433010] [2021-11-06 11:07:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:00,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:00,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:07:00,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357055913] [2021-11-06 11:07:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:00,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:07:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:07:00,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:07:00,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15