./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:04:25,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:04:25,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:04:25,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:04:25,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:04:25,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:04:25,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:04:25,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:04:25,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:04:25,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:04:25,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:04:25,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:04:25,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:04:25,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:04:25,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:04:25,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:04:25,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:04:25,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:04:25,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:04:25,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:04:25,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:04:25,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:04:25,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:04:25,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:04:25,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:04:25,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:04:25,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:04:25,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:04:25,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:04:25,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:04:25,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:04:25,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:04:25,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:04:25,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:04:25,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:04:25,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:04:25,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:04:25,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:04:25,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:04:25,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:04:25,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:04:25,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:04:26,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:04:26,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:04:26,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:04:26,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:04:26,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:04:26,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:04:26,018 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:04:26,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:04:26,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:04:26,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:04:26,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:04:26,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:04:26,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:04:26,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:04:26,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:04:26,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:04:26,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:04:26,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:04:26,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:04:26,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:04:26,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:04:26,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:04:26,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:04:26,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:04:26,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-11-05 13:04:26,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:04:26,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:04:26,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:04:26,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:04:26,347 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:04:26,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-05 13:04:26,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8212abb62/7336c3aa00714568bae7426236dbff1b/FLAGd49cd91e6 [2021-11-05 13:04:27,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:04:27,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-05 13:04:27,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8212abb62/7336c3aa00714568bae7426236dbff1b/FLAGd49cd91e6 [2021-11-05 13:04:27,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8212abb62/7336c3aa00714568bae7426236dbff1b [2021-11-05 13:04:27,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:04:27,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:04:27,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:04:27,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:04:27,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:04:27,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:04:27" (1/1) ... [2021-11-05 13:04:27,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c4792d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:27, skipping insertion in model container [2021-11-05 13:04:27,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:04:27" (1/1) ... [2021-11-05 13:04:27,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:04:27,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:04:27,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-05 13:04:27,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-05 13:04:27,861 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:04:27,870 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:04:28,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:28,742 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:04:29,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:04:29,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:04:29,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:04:29,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:04:29,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:04:29,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:04:29,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:04:29,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:04:29,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:04:29,173 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:04:29,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:04:29,590 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:04:29,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-05 13:04:29,610 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-05 13:04:29,611 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:04:29,611 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:04:29,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:04:29,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:04:29,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:04:29,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:04:29,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:04:29,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:04:29,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:04:29,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:04:29,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:04:29,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:04:29,695 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:04:29,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:04:29,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:04:30,095 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:04:30,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30 WrapperNode [2021-11-05 13:04:30,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:04:30,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:04:30,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:04:30,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:04:30,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:04:30,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:04:30,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:04:30,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:04:30,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:04:30,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:04:30,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:04:30,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:04:30,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (1/1) ... [2021-11-05 13:04:30,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:04:30,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:04:30,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:04:30,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:04:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 13:04:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:04:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:04:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:04:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:04:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:04:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:04:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:04:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:04:40,616 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##312: assume !true; [2021-11-05 13:04:40,616 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume !true; [2021-11-05 13:04:40,616 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##343: assume !true; [2021-11-05 13:04:40,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:04:40,623 INFO L299 CfgBuilder]: Removed 302 assume(true) statements. [2021-11-05 13:04:40,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:04:40 BoogieIcfgContainer [2021-11-05 13:04:40,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:04:40,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:04:40,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:04:40,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:04:40,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:04:27" (1/3) ... [2021-11-05 13:04:40,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc7fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:04:40, skipping insertion in model container [2021-11-05 13:04:40,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:04:30" (2/3) ... [2021-11-05 13:04:40,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc7fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:04:40, skipping insertion in model container [2021-11-05 13:04:40,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:04:40" (3/3) ... [2021-11-05 13:04:40,631 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2021-11-05 13:04:40,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:04:40,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-05 13:04:40,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:04:40,671 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:04:40,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-05 13:04:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 461 states, 443 states have (on average 1.5146726862302482) internal successors, (671), 460 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 13:04:40,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:40,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:40,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -732608065, now seen corresponding path program 1 times [2021-11-05 13:04:40,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:40,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358047035] [2021-11-05 13:04:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:40,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:41,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:41,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358047035] [2021-11-05 13:04:41,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358047035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:41,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:41,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:04:41,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826700497] [2021-11-05 13:04:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:41,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:04:41,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:04:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:04:41,271 INFO L87 Difference]: Start difference. First operand has 461 states, 443 states have (on average 1.5146726862302482) internal successors, (671), 460 states have internal predecessors, (671), 0 states have call successors, (0), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:41,337 INFO L93 Difference]: Finished difference Result 917 states and 1336 transitions. [2021-11-05 13:04:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:04:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-05 13:04:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:41,349 INFO L225 Difference]: With dead ends: 917 [2021-11-05 13:04:41,349 INFO L226 Difference]: Without dead ends: 455 [2021-11-05 13:04:41,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:04:41,355 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:41,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:04:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-05 13:04:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-11-05 13:04:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 438 states have (on average 1.3972602739726028) internal successors, (612), 454 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 612 transitions. [2021-11-05 13:04:41,422 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 612 transitions. Word has length 51 [2021-11-05 13:04:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:41,423 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 612 transitions. [2021-11-05 13:04:41,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 612 transitions. [2021-11-05 13:04:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 13:04:41,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:41,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:41,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:04:41,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1623993204, now seen corresponding path program 1 times [2021-11-05 13:04:41,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:41,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571238451] [2021-11-05 13:04:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:41,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:41,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:04:41,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034125022] [2021-11-05 13:04:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:41,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:04:41,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:04:41,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:04:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:04:42,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:04:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:42,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:04:42,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:42,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571238451] [2021-11-05 13:04:42,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:04:42,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034125022] [2021-11-05 13:04:42,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034125022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:42,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:04:42,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157468519] [2021-11-05 13:04:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:04:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:04:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:04:42,881 INFO L87 Difference]: Start difference. First operand 455 states and 612 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:43,772 INFO L93 Difference]: Finished difference Result 1076 states and 1447 transitions. [2021-11-05 13:04:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:04:43,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-05 13:04:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:43,776 INFO L225 Difference]: With dead ends: 1076 [2021-11-05 13:04:43,776 INFO L226 Difference]: Without dead ends: 711 [2021-11-05 13:04:43,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 243.35ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:04:43,778 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1524 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 570.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.42ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 670.86ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:43,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 2011 Invalid, 146 Unknown, 0 Unchecked, 11.42ms Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 670.86ms Time] [2021-11-05 13:04:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-05 13:04:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 455. [2021-11-05 13:04:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 438 states have (on average 1.3926940639269407) internal successors, (610), 454 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 610 transitions. [2021-11-05 13:04:43,810 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 610 transitions. Word has length 54 [2021-11-05 13:04:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:43,810 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 610 transitions. [2021-11-05 13:04:43,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 610 transitions. [2021-11-05 13:04:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 13:04:43,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:43,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:43,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:04:44,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:44,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1196059165, now seen corresponding path program 1 times [2021-11-05 13:04:44,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:44,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841948971] [2021-11-05 13:04:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:44,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:44,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:04:44,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106101651] [2021-11-05 13:04:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:44,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:04:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:04:44,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:04:44,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:04:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:44,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:04:44,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:04:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:45,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:04:45,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:45,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841948971] [2021-11-05 13:04:45,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:04:45,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106101651] [2021-11-05 13:04:45,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106101651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:45,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:45,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:04:45,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915424186] [2021-11-05 13:04:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:45,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:04:45,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:04:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:04:45,069 INFO L87 Difference]: Start difference. First operand 455 states and 610 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:45,207 INFO L93 Difference]: Finished difference Result 1331 states and 1791 transitions. [2021-11-05 13:04:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:04:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-05 13:04:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:45,210 INFO L225 Difference]: With dead ends: 1331 [2021-11-05 13:04:45,211 INFO L226 Difference]: Without dead ends: 898 [2021-11-05 13:04:45,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:04:45,212 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1189 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.80ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:45,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 3593 Invalid, 16 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 48.80ms Time] [2021-11-05 13:04:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-05 13:04:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 458. [2021-11-05 13:04:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.3900226757369614) internal successors, (613), 457 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 613 transitions. [2021-11-05 13:04:45,226 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 613 transitions. Word has length 55 [2021-11-05 13:04:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:45,227 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 613 transitions. [2021-11-05 13:04:45,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 613 transitions. [2021-11-05 13:04:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:04:45,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:45,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:45,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:04:45,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-05 13:04:45,446 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1561813049, now seen corresponding path program 1 times [2021-11-05 13:04:45,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:45,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788644538] [2021-11-05 13:04:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:45,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:45,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:45,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788644538] [2021-11-05 13:04:45,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788644538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:45,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:45,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:04:45,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357905865] [2021-11-05 13:04:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:45,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:04:45,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:04:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:04:46,000 INFO L87 Difference]: Start difference. First operand 458 states and 613 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:48,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:50,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:52,058 INFO L93 Difference]: Finished difference Result 894 states and 1202 transitions. [2021-11-05 13:04:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:04:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 13:04:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:52,061 INFO L225 Difference]: With dead ends: 894 [2021-11-05 13:04:52,061 INFO L226 Difference]: Without dead ends: 474 [2021-11-05 13:04:52,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 495.69ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:04:52,062 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1343 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5376.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.14ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5677.49ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:52,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 2590 Invalid, 406 Unknown, 0 Unchecked, 21.14ms Time], IncrementalHoareTripleChecker [25 Valid, 379 Invalid, 2 Unknown, 0 Unchecked, 5677.49ms Time] [2021-11-05 13:04:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-05 13:04:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 462. [2021-11-05 13:04:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 445 states have (on average 1.3865168539325843) internal successors, (617), 461 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 617 transitions. [2021-11-05 13:04:52,074 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 617 transitions. Word has length 57 [2021-11-05 13:04:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:52,075 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 617 transitions. [2021-11-05 13:04:52,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 617 transitions. [2021-11-05 13:04:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:04:52,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:52,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:52,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:04:52,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1379675655, now seen corresponding path program 1 times [2021-11-05 13:04:52,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:52,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809816759] [2021-11-05 13:04:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:52,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:52,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:52,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809816759] [2021-11-05 13:04:52,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809816759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:52,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:52,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:04:52,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693419774] [2021-11-05 13:04:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:52,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:04:52,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:04:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:04:52,361 INFO L87 Difference]: Start difference. First operand 462 states and 617 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:52,656 INFO L93 Difference]: Finished difference Result 885 states and 1188 transitions. [2021-11-05 13:04:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:04:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 13:04:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:52,658 INFO L225 Difference]: With dead ends: 885 [2021-11-05 13:04:52,658 INFO L226 Difference]: Without dead ends: 458 [2021-11-05 13:04:52,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.77ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:04:52,660 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 581 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.55ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:52,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 1136 Invalid, 78 Unknown, 0 Unchecked, 3.43ms Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 267.55ms Time] [2021-11-05 13:04:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-05 13:04:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-11-05 13:04:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 457 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 608 transitions. [2021-11-05 13:04:52,683 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 608 transitions. Word has length 57 [2021-11-05 13:04:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 608 transitions. [2021-11-05 13:04:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 608 transitions. [2021-11-05 13:04:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:04:52,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:52,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:52,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:04:52,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1068442457, now seen corresponding path program 1 times [2021-11-05 13:04:52,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:52,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928161730] [2021-11-05 13:04:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:52,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:52,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:52,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928161730] [2021-11-05 13:04:52,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928161730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:52,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:52,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:04:52,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277264906] [2021-11-05 13:04:52,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:52,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:04:52,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:04:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:04:53,000 INFO L87 Difference]: Start difference. First operand 458 states and 608 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:55,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:57,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:04:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:04:59,118 INFO L93 Difference]: Finished difference Result 1185 states and 1581 transitions. [2021-11-05 13:04:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:04:59,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 13:04:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:04:59,120 INFO L225 Difference]: With dead ends: 1185 [2021-11-05 13:04:59,121 INFO L226 Difference]: Without dead ends: 764 [2021-11-05 13:04:59,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 315.09ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:04:59,122 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 682 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 134 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5445.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5831.94ms IncrementalHoareTripleChecker+Time [2021-11-05 13:04:59,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1919 Invalid, 488 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [134 Valid, 352 Invalid, 2 Unknown, 0 Unchecked, 5831.94ms Time] [2021-11-05 13:04:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-05 13:04:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 458. [2021-11-05 13:04:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.346938775510204) internal successors, (594), 457 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 594 transitions. [2021-11-05 13:04:59,136 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 594 transitions. Word has length 61 [2021-11-05 13:04:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:04:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 594 transitions. [2021-11-05 13:04:59,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:04:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 594 transitions. [2021-11-05 13:04:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 13:04:59,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:04:59,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:04:59,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:04:59,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:04:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:04:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 401026089, now seen corresponding path program 1 times [2021-11-05 13:04:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:04:59,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601665339] [2021-11-05 13:04:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:04:59,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:04:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:04:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:04:59,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:04:59,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601665339] [2021-11-05 13:04:59,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601665339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:04:59,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:04:59,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:04:59,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256135840] [2021-11-05 13:04:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:04:59,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:04:59,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:04:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:04:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:04:59,604 INFO L87 Difference]: Start difference. First operand 458 states and 594 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:01,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:03,116 INFO L93 Difference]: Finished difference Result 1045 states and 1368 transitions. [2021-11-05 13:05:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:05:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-05 13:05:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:03,119 INFO L225 Difference]: With dead ends: 1045 [2021-11-05 13:05:03,119 INFO L226 Difference]: Without dead ends: 647 [2021-11-05 13:05:03,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 347.55ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:05:03,121 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 2742 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3011.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.02ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3241.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:03,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2742 Valid, 1441 Invalid, 303 Unknown, 0 Unchecked, 8.02ms Time], IncrementalHoareTripleChecker [31 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 3241.27ms Time] [2021-11-05 13:05:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-11-05 13:05:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 458. [2021-11-05 13:05:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.344671201814059) internal successors, (593), 457 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:03,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 593 transitions. [2021-11-05 13:05:03,139 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 593 transitions. Word has length 63 [2021-11-05 13:05:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:03,139 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 593 transitions. [2021-11-05 13:05:03,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 593 transitions. [2021-11-05 13:05:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 13:05:03,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:03,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:03,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:05:03,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:05:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1412143339, now seen corresponding path program 1 times [2021-11-05 13:05:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:03,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871984888] [2021-11-05 13:05:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:03,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:03,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:03,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871984888] [2021-11-05 13:05:03,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871984888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:03,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:03,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 13:05:03,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506602162] [2021-11-05 13:05:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:03,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:05:03,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:03,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:05:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:05:03,607 INFO L87 Difference]: Start difference. First operand 458 states and 593 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:05,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:07,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:09,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:12,786 INFO L93 Difference]: Finished difference Result 1061 states and 1378 transitions. [2021-11-05 13:05:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:05:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-05 13:05:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:12,790 INFO L225 Difference]: With dead ends: 1061 [2021-11-05 13:05:12,790 INFO L226 Difference]: Without dead ends: 696 [2021-11-05 13:05:12,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 511.84ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:05:12,791 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 2649 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8213.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.29ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8760.66ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:12,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 2337 Invalid, 653 Unknown, 0 Unchecked, 13.29ms Time], IncrementalHoareTripleChecker [30 Valid, 620 Invalid, 3 Unknown, 0 Unchecked, 8760.66ms Time] [2021-11-05 13:05:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-05 13:05:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 458. [2021-11-05 13:05:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.342403628117914) internal successors, (592), 457 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 592 transitions. [2021-11-05 13:05:12,814 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 592 transitions. Word has length 63 [2021-11-05 13:05:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:12,814 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 592 transitions. [2021-11-05 13:05:12,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 592 transitions. [2021-11-05 13:05:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:05:12,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:12,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:12,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:05:12,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:05:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash 538765444, now seen corresponding path program 1 times [2021-11-05 13:05:12,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:12,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025575283] [2021-11-05 13:05:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:12,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:13,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:13,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025575283] [2021-11-05 13:05:13,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025575283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:13,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:13,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:05:13,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685316504] [2021-11-05 13:05:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:13,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:05:13,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:05:13,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:05:13,493 INFO L87 Difference]: Start difference. First operand 458 states and 592 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:15,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:17,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:19,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:22,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:24,868 INFO L93 Difference]: Finished difference Result 799 states and 1040 transitions. [2021-11-05 13:05:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:05:24,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 13:05:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:24,871 INFO L225 Difference]: With dead ends: 799 [2021-11-05 13:05:24,871 INFO L226 Difference]: Without dead ends: 460 [2021-11-05 13:05:24,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 678.43ms TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:05:24,872 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 1409 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 32 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10085.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.14ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10924.87ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:24,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 2651 Invalid, 599 Unknown, 0 Unchecked, 11.14ms Time], IncrementalHoareTripleChecker [32 Valid, 563 Invalid, 4 Unknown, 0 Unchecked, 10924.87ms Time] [2021-11-05 13:05:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-05 13:05:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2021-11-05 13:05:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.3401360544217686) internal successors, (591), 457 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 591 transitions. [2021-11-05 13:05:24,890 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 591 transitions. Word has length 66 [2021-11-05 13:05:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:24,890 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 591 transitions. [2021-11-05 13:05:24,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 591 transitions. [2021-11-05 13:05:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 13:05:24,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:24,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:24,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:05:24,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:05:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 251866560, now seen corresponding path program 1 times [2021-11-05 13:05:24,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:24,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678199390] [2021-11-05 13:05:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:24,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:26,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:26,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678199390] [2021-11-05 13:05:26,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678199390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:26,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:26,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 13:05:26,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012126892] [2021-11-05 13:05:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:26,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 13:05:26,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 13:05:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:05:26,811 INFO L87 Difference]: Start difference. First operand 458 states and 591 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:28,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:30,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:33,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:35,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:37,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:39,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:46,858 INFO L93 Difference]: Finished difference Result 871 states and 1135 transitions. [2021-11-05 13:05:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 13:05:46,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-05 13:05:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:46,861 INFO L225 Difference]: With dead ends: 871 [2021-11-05 13:05:46,861 INFO L226 Difference]: Without dead ends: 478 [2021-11-05 13:05:46,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3933.12ms TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2021-11-05 13:05:46,862 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 758 mSDsluCounter, 4276 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 38 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15760.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.17ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17019.37ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:46,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 4853 Invalid, 1032 Unknown, 0 Unchecked, 16.17ms Time], IncrementalHoareTripleChecker [38 Valid, 988 Invalid, 6 Unknown, 0 Unchecked, 17019.37ms Time] [2021-11-05 13:05:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-05 13:05:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 467. [2021-11-05 13:05:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 450 states have (on average 1.3355555555555556) internal successors, (601), 466 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 601 transitions. [2021-11-05 13:05:46,879 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 601 transitions. Word has length 69 [2021-11-05 13:05:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:46,879 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 601 transitions. [2021-11-05 13:05:46,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 601 transitions. [2021-11-05 13:05:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 13:05:46,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:46,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:46,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:05:46,880 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:05:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash -736419282, now seen corresponding path program 1 times [2021-11-05 13:05:46,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:46,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181131854] [2021-11-05 13:05:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:46,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:48,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181131854] [2021-11-05 13:05:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181131854] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:05:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447020938] [2021-11-05 13:05:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:48,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:48,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:05:48,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:05:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:49,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-05 13:05:49,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:05:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:05:49,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:05:49,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447020938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:49,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:05:49,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2021-11-05 13:05:49,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409291928] [2021-11-05 13:05:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:49,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:05:49,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:05:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:05:49,989 INFO L87 Difference]: Start difference. First operand 467 states and 601 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:50,915 INFO L93 Difference]: Finished difference Result 1170 states and 1531 transitions. [2021-11-05 13:05:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:05:50,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-05 13:05:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:50,917 INFO L225 Difference]: With dead ends: 1170 [2021-11-05 13:05:50,918 INFO L226 Difference]: Without dead ends: 774 [2021-11-05 13:05:50,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1360.88ms TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-11-05 13:05:50,919 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 390 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 749.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 799.02ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:50,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 2198 Invalid, 246 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [24 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 799.02ms Time] [2021-11-05 13:05:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-05 13:05:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 458. [2021-11-05 13:05:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 441 states have (on average 1.3356009070294785) internal successors, (589), 457 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 589 transitions. [2021-11-05 13:05:50,935 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 589 transitions. Word has length 70 [2021-11-05 13:05:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:50,935 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 589 transitions. [2021-11-05 13:05:50,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 589 transitions. [2021-11-05 13:05:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:05:50,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:50,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:50,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 13:05:51,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:51,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:05:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash 169832630, now seen corresponding path program 1 times [2021-11-05 13:05:51,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:51,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055708214] [2021-11-05 13:05:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:51,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:53,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:53,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055708214] [2021-11-05 13:05:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055708214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:53,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:53,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 13:05:53,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547854601] [2021-11-05 13:05:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:53,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 13:05:53,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 13:05:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:05:53,817 INFO L87 Difference]: Start difference. First operand 458 states and 589 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:55,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:05:57,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:00,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:02,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:04,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:06,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:08,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:10,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:12,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:15,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:17,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:19,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:32,909 INFO L93 Difference]: Finished difference Result 1109 states and 1443 transitions. [2021-11-05 13:06:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 13:06:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:06:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:32,912 INFO L225 Difference]: With dead ends: 1109 [2021-11-05 13:06:32,913 INFO L226 Difference]: Without dead ends: 732 [2021-11-05 13:06:32,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 7288.77ms TimeCoverageRelationStatistics Valid=352, Invalid=1454, Unknown=0, NotChecked=0, Total=1806 [2021-11-05 13:06:32,914 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 2449 mSDsluCounter, 6016 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 92 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30792.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.15ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33065.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:32,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 6516 Invalid, 1980 Unknown, 0 Unchecked, 32.15ms Time], IncrementalHoareTripleChecker [92 Valid, 1876 Invalid, 12 Unknown, 0 Unchecked, 33065.27ms Time] [2021-11-05 13:06:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-05 13:06:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 483. [2021-11-05 13:06:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 466 states have (on average 1.3261802575107295) internal successors, (618), 482 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 618 transitions. [2021-11-05 13:06:32,935 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 618 transitions. Word has length 72 [2021-11-05 13:06:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:32,935 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 618 transitions. [2021-11-05 13:06:32,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 618 transitions. [2021-11-05 13:06:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:06:32,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:32,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:06:32,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:06:32,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:06:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 849891000, now seen corresponding path program 1 times [2021-11-05 13:06:32,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:32,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127340743] [2021-11-05 13:06:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:32,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:33,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:33,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127340743] [2021-11-05 13:06:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127340743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:33,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 13:06:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363096907] [2021-11-05 13:06:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:33,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:06:33,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:06:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:06:33,392 INFO L87 Difference]: Start difference. First operand 483 states and 618 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:35,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:37,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:39,755 INFO L93 Difference]: Finished difference Result 1055 states and 1370 transitions. [2021-11-05 13:06:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:06:39,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:06:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:39,757 INFO L225 Difference]: With dead ends: 1055 [2021-11-05 13:06:39,757 INFO L226 Difference]: Without dead ends: 673 [2021-11-05 13:06:39,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 526.69ms TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:06:39,759 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 3550 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5541.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5962.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:39,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3550 Valid, 1814 Invalid, 485 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [45 Valid, 438 Invalid, 2 Unknown, 0 Unchecked, 5962.00ms Time] [2021-11-05 13:06:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-05 13:06:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 483. [2021-11-05 13:06:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 466 states have (on average 1.3218884120171674) internal successors, (616), 482 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 616 transitions. [2021-11-05 13:06:39,777 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 616 transitions. Word has length 72 [2021-11-05 13:06:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:39,778 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 616 transitions. [2021-11-05 13:06:39,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 616 transitions. [2021-11-05 13:06:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:06:39,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:39,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:06:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 13:06:39,779 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:06:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 147127688, now seen corresponding path program 1 times [2021-11-05 13:06:39,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:39,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246972944] [2021-11-05 13:06:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:39,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:41,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:41,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246972944] [2021-11-05 13:06:41,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246972944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:06:41,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499870255] [2021-11-05 13:06:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:41,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:41,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:41,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:41,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:06:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:42,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-05 13:06:42,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:06:42,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:42,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499870255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:42,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:06:42,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2021-11-05 13:06:42,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098921084] [2021-11-05 13:06:42,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:06:42,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:06:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:06:42,834 INFO L87 Difference]: Start difference. First operand 483 states and 616 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:43,161 INFO L93 Difference]: Finished difference Result 941 states and 1203 transitions. [2021-11-05 13:06:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:06:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-05 13:06:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:43,164 INFO L225 Difference]: With dead ends: 941 [2021-11-05 13:06:43,164 INFO L226 Difference]: Without dead ends: 483 [2021-11-05 13:06:43,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1452.20ms TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:06:43,166 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.14ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:43,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1701 Invalid, 53 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 218.14ms Time] [2021-11-05 13:06:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-05 13:06:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 480. [2021-11-05 13:06:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 463 states have (on average 1.3196544276457884) internal successors, (611), 479 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 611 transitions. [2021-11-05 13:06:43,184 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 611 transitions. Word has length 73 [2021-11-05 13:06:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:43,184 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 611 transitions. [2021-11-05 13:06:43,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 611 transitions. [2021-11-05 13:06:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 13:06:43,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:43,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:06:43,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:06:43,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:43,402 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:06:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1342261355, now seen corresponding path program 1 times [2021-11-05 13:06:43,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:43,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241509733] [2021-11-05 13:06:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:43,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:43,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:43,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554642529] [2021-11-05 13:06:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:43,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:43,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:43,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:43,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:06:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:44,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-05 13:06:44,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:45,066 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 11 [2021-11-05 13:06:45,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-05 13:06:46,396 INFO L354 Elim1Store]: treesize reduction 228, result has 4.6 percent of original size [2021-11-05 13:06:46,396 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 108 treesize of output 106 [2021-11-05 13:06:46,471 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-05 13:06:46,472 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 98 treesize of output 92 [2021-11-05 13:06:46,528 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-05 13:06:46,529 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 91 treesize of output 83 [2021-11-05 13:06:47,181 INFO L354 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2021-11-05 13:06:47,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 76 [2021-11-05 13:06:47,247 INFO L354 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size [2021-11-05 13:06:47,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 50 [2021-11-05 13:06:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:06:47,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:47,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:47,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241509733] [2021-11-05 13:06:47,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:47,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554642529] [2021-11-05 13:06:47,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554642529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:47,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:47,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 13:06:47,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516685128] [2021-11-05 13:06:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:47,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:06:47,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:06:47,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:06:47,475 INFO L87 Difference]: Start difference. First operand 480 states and 611 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:49,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:51,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:53,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:55,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:58,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:07:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:07:06,691 INFO L93 Difference]: Finished difference Result 1406 states and 1831 transitions. [2021-11-05 13:07:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 13:07:06,692 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-05 13:07:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:07:06,695 INFO L225 Difference]: With dead ends: 1406 [2021-11-05 13:07:06,696 INFO L226 Difference]: Without dead ends: 1029 [2021-11-05 13:07:06,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 4521.44ms TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:07:06,697 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 2716 mSDsluCounter, 6286 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 83 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14552.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.43ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 15491.13ms IncrementalHoareTripleChecker+Time [2021-11-05 13:07:06,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 6792 Invalid, 1564 Unknown, 0 Unchecked, 28.43ms Time], IncrementalHoareTripleChecker [83 Valid, 1269 Invalid, 5 Unknown, 207 Unchecked, 15491.13ms Time] [2021-11-05 13:07:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-05 13:07:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 455. [2021-11-05 13:07:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 438 states have (on average 1.3287671232876712) internal successors, (582), 454 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:07:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 582 transitions. [2021-11-05 13:07:06,755 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 582 transitions. Word has length 76 [2021-11-05 13:07:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:07:06,755 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 582 transitions. [2021-11-05 13:07:06,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:07:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 582 transitions. [2021-11-05 13:07:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 13:07:06,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:07:06,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:07:06,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:07:06,975 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,SelfDestructingSolverStorable14 [2021-11-05 13:07:06,976 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:07:06,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:07:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 883042354, now seen corresponding path program 1 times [2021-11-05 13:07:06,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:07:06,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163102348] [2021-11-05 13:07:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:07:06,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:07:07,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:07:07,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058152779] [2021-11-05 13:07:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:07:07,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:07:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:07:07,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:07:07,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:10:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:10:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 204 conjunts are in the unsatisfiable core [2021-11-05 13:10:05,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:10:05,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:10:05,737 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-05 13:10:05,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-05 13:10:06,534 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-05 13:10:06,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-05 13:10:07,298 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-05 13:10:07,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-05 13:10:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:08,394 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-05 13:10:08,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-05 13:10:09,107 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 103 treesize of output 79 [2021-11-05 13:10:09,117 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 72 treesize of output 68 [2021-11-05 13:10:09,256 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-05 13:10:09,257 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 77 treesize of output 94 [2021-11-05 13:10:10,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-05 13:10:26,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:10:26,734 INFO L354 Elim1Store]: treesize reduction 204, result has 18.1 percent of original size [2021-11-05 13:10:26,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 662 treesize of output 475 [2021-11-05 13:10:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:27,149 INFO L354 Elim1Store]: treesize reduction 308, result has 20.0 percent of original size [2021-11-05 13:10:27,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 847 treesize of output 689 [2021-11-05 13:10:27,610 INFO L354 Elim1Store]: treesize reduction 186, result has 26.2 percent of original size [2021-11-05 13:10:27,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 901 treesize of output 949 [2021-11-05 13:10:27,792 INFO L354 Elim1Store]: treesize reduction 232, result has 22.9 percent of original size [2021-11-05 13:10:27,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 940 treesize of output 890 [2021-11-05 13:10:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:28,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:10:28,259 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 617 treesize of output 567 [2021-11-05 13:10:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:28,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2021-11-05 13:10:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:28,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:28,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:10:28,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 14 [2021-11-05 13:10:29,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:10:29,097 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 43 treesize of output 25 [2021-11-05 13:10:29,406 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-05 13:10:29,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 199 [2021-11-05 13:10:29,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,497 INFO L354 Elim1Store]: treesize reduction 35, result has 18.6 percent of original size [2021-11-05 13:10:29,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 171 treesize of output 153 [2021-11-05 13:10:29,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 14 [2021-11-05 13:10:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:10:29,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:10:29,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 14 [2021-11-05 13:11:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:11:39,689 INFO L354 Elim1Store]: treesize reduction 88, result has 51.4 percent of original size [2021-11-05 13:11:39,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 99 treesize of output 173 [2021-11-05 13:11:41,102 INFO L354 Elim1Store]: treesize reduction 250, result has 12.6 percent of original size [2021-11-05 13:11:41,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 146 [2021-11-05 13:11:41,216 INFO L354 Elim1Store]: treesize reduction 360, result has 12.4 percent of original size [2021-11-05 13:11:41,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 301 [2021-11-05 13:11:41,351 INFO L354 Elim1Store]: treesize reduction 300, result has 15.3 percent of original size [2021-11-05 13:11:41,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 303 treesize of output 255 [2021-11-05 13:11:41,363 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:11:41,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 188 treesize of output 168 [2021-11-05 13:11:42,522 INFO L354 Elim1Store]: treesize reduction 105, result has 15.3 percent of original size [2021-11-05 13:11:42,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 100 [2021-11-05 13:11:42,622 INFO L354 Elim1Store]: treesize reduction 85, result has 15.0 percent of original size [2021-11-05 13:11:42,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 72 [2021-11-05 13:11:45,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:11:45,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:11:45,062 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:11:45,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 15 [2021-11-05 13:11:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:11:45,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:11:45,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:11:45,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163102348] [2021-11-05 13:11:45,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:11:45,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058152779] [2021-11-05 13:11:45,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058152779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:11:45,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:11:45,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-05 13:11:45,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680619941] [2021-11-05 13:11:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:11:45,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 13:11:45,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:11:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 13:11:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:11:45,318 INFO L87 Difference]: Start difference. First operand 455 states and 582 transitions. Second operand has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:11:47,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:11:49,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:11:51,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:11:53,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:11:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:11:56,970 INFO L93 Difference]: Finished difference Result 1146 states and 1487 transitions. [2021-11-05 13:11:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 13:11:56,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-05 13:11:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:11:56,973 INFO L225 Difference]: With dead ends: 1146 [2021-11-05 13:11:56,973 INFO L226 Difference]: Without dead ends: 760 [2021-11-05 13:11:56,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 3567.59ms TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-11-05 13:11:56,975 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 412 mSDsluCounter, 7074 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10184.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 7623 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 2168 IncrementalHoareTripleChecker+Unchecked, 11026.94ms IncrementalHoareTripleChecker+Time [2021-11-05 13:11:56,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 7623 Invalid, 2661 Unknown, 0 Unchecked, 17.83ms Time], IncrementalHoareTripleChecker [1 Valid, 488 Invalid, 4 Unknown, 2168 Unchecked, 11026.94ms Time] [2021-11-05 13:11:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-05 13:11:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 472. [2021-11-05 13:11:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 455 states have (on average 1.3186813186813187) internal successors, (600), 471 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:11:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 600 transitions. [2021-11-05 13:11:57,002 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 600 transitions. Word has length 78 [2021-11-05 13:11:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:11:57,002 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 600 transitions. [2021-11-05 13:11:57,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:11:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 600 transitions. [2021-11-05 13:11:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 13:11:57,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:11:57,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:11:57,215 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2021-11-05 13:11:57,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2021-11-05 13:11:57,250 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,SelfDestructingSolverStorable15 [2021-11-05 13:11:57,251 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 13:11:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:11:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 913929584, now seen corresponding path program 1 times [2021-11-05 13:11:57,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:11:57,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427914641] [2021-11-05 13:11:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:11:57,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:11:57,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:11:57,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089215827] [2021-11-05 13:11:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:11:57,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:11:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:11:57,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:11:57,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:11:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:11:58,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-05 13:11:58,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:11:59,329 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 21 treesize of output 17 [2021-11-05 13:12:00,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:00,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:12:00,142 INFO L354 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2021-11-05 13:12:00,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 191 treesize of output 124 [2021-11-05 13:12:00,151 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 227 treesize of output 187 [2021-11-05 13:12:00,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:00,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:00,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:00,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:12:00,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 73 [2021-11-05 13:12:01,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:01,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-05 13:12:01,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:01,931 INFO L354 Elim1Store]: treesize reduction 158, result has 28.8 percent of original size [2021-11-05 13:12:01,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 92 [2021-11-05 13:12:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:17,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:17,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:17,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:17,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,416 INFO L354 Elim1Store]: treesize reduction 554, result has 24.0 percent of original size [2021-11-05 13:12:19,416 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 19 case distinctions, treesize of input 215 treesize of output 355 [2021-11-05 13:12:19,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:19,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,301 INFO L354 Elim1Store]: treesize reduction 416, result has 14.9 percent of original size [2021-11-05 13:12:20,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 376 treesize of output 388 [2021-11-05 13:12:20,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:12:20,851 INFO L354 Elim1Store]: treesize reduction 356, result has 16.6 percent of original size [2021-11-05 13:12:20,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 395 treesize of output 451 Killed by 15