./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:33:20,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:33:20,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:33:20,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:33:20,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:33:20,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:33:20,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:33:20,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:33:20,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:33:20,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:33:20,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:33:20,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:33:20,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:33:20,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:33:20,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:33:20,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:33:20,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:33:20,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:33:20,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:33:20,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:33:20,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:33:20,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:33:20,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:33:20,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:33:20,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:33:20,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:33:20,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:33:20,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:33:20,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:33:20,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:33:20,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:33:20,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:33:20,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:33:20,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:33:20,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:33:20,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:33:20,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:33:20,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:33:20,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:33:20,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:33:20,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:33:20,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:33:20,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:33:20,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:33:20,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:33:20,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:33:20,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:33:20,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:33:20,966 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:33:20,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:33:20,967 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:33:20,967 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:33:20,967 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:33:20,967 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:33:20,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:33:20,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:33:20,968 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:33:20,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:33:20,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:33:20,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:33:20,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:33:20,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:33:20,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:33:20,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:33:20,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:33:20,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:33:20,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:33:20,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:33:20,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:33:20,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:33:20,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:33:20,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:20,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:33:20,973 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:33:20,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:33:20,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:33:20,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:33:20,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:33:20,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:33:20,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:33:20,974 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2022-11-26 00:33:21,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:33:21,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:33:21,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:33:21,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:33:21,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:33:21,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-11-26 00:33:24,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:33:25,252 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:33:25,253 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-11-26 00:33:25,288 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/data/085f49b01/41cfe20ffbc04e36878b7ef9062bda3e/FLAGd76986c92 [2022-11-26 00:33:25,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/data/085f49b01/41cfe20ffbc04e36878b7ef9062bda3e [2022-11-26 00:33:25,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:33:25,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:33:25,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:25,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:33:25,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:33:25,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:25" (1/1) ... [2022-11-26 00:33:25,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7c50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:25, skipping insertion in model container [2022-11-26 00:33:25,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:25" (1/1) ... [2022-11-26 00:33:25,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:33:25,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:33:25,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-11-26 00:33:25,806 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-11-26 00:33:26,895 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:33:27,002 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,003 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,004 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,005 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,024 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,027 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,028 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,030 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,034 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,037 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:27,154 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:27,154 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:27,156 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:27,163 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:33:27,166 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:33:27,167 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:33:27,653 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:33:27,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:33:27,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:33:27,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:33:27,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:33:27,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:33:27,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:33:27,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:33:27,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:33:27,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:33:27,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:33:28,004 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,014 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,155 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:33:28,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:28,197 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:33:28,215 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-11-26 00:33:28,216 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-11-26 00:33:28,263 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:33:28,286 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,287 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,289 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,313 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,313 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,315 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,316 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,320 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,321 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,326 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,345 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:28,346 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:28,346 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:33:28,359 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:33:28,363 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:33:28,363 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:33:28,412 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:33:28,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:33:28,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:33:28,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:33:28,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:33:28,419 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:33:28,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:33:28,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:33:28,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:33:28,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:33:28,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:33:28,505 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,512 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:33:28,567 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:33:28,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:28,878 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:33:28,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28 WrapperNode [2022-11-26 00:33:28,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:28,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:28,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:33:28,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:33:28,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:28,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,040 INFO L138 Inliner]: procedures = 690, calls = 1714, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 680 [2022-11-26 00:33:29,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:29,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:33:29,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:33:29,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:33:29,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:33:29,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:33:29,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:33:29,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:33:29,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (1/1) ... [2022-11-26 00:33:29,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:29,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:33:29,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:33:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:33:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-26 00:33:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-26 00:33:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-26 00:33:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-26 00:33:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-26 00:33:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-26 00:33:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:33:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-26 00:33:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-26 00:33:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:33:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:33:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:33:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:33:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-26 00:33:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-26 00:33:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:33:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:33:29,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:33:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-26 00:33:29,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-26 00:33:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-26 00:33:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-26 00:33:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-26 00:33:29,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-26 00:33:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:33:29,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:33:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:33:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:33:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:33:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-26 00:33:29,247 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-26 00:33:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-26 00:33:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-26 00:33:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:33:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-11-26 00:33:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-11-26 00:33:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-26 00:33:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-26 00:33:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:33:29,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:33:29,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:33:31,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:33:31,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:33:31,870 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:33:31,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:31 BoogieIcfgContainer [2022-11-26 00:33:31,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:33:31,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:33:31,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:33:31,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:33:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:33:25" (1/3) ... [2022-11-26 00:33:31,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@869a04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:31, skipping insertion in model container [2022-11-26 00:33:31,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:28" (2/3) ... [2022-11-26 00:33:31,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@869a04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:31, skipping insertion in model container [2022-11-26 00:33:31,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:31" (3/3) ... [2022-11-26 00:33:31,895 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2022-11-26 00:33:31,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:33:31,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:33:31,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:33:32,008 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d27822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:33:32,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:33:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-26 00:33:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:33:32,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:32,039 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:32,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1315314645, now seen corresponding path program 1 times [2022-11-26 00:33:32,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:32,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175891942] [2022-11-26 00:33:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-26 00:33:33,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:33,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175891942] [2022-11-26 00:33:33,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175891942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:33:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809536305] [2022-11-26 00:33:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:33,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:33,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:33,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:33,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:33:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:33:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-26 00:33:34,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:34,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809536305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:34,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:33:34,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-26 00:33:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934536412] [2022-11-26 00:33:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:33:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:33:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:33:34,749 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:35,817 INFO L93 Difference]: Finished difference Result 270 states and 378 transitions. [2022-11-26 00:33:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:33:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 133 [2022-11-26 00:33:35,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:35,836 INFO L225 Difference]: With dead ends: 270 [2022-11-26 00:33:35,836 INFO L226 Difference]: Without dead ends: 137 [2022-11-26 00:33:35,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:33:35,854 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 24 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:35,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 539 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:33:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-26 00:33:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-26 00:33:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-11-26 00:33:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2022-11-26 00:33:35,933 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 133 [2022-11-26 00:33:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:35,934 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2022-11-26 00:33:35,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2022-11-26 00:33:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-26 00:33:35,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:35,939 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:35,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:36,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 00:33:36,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash 53104247, now seen corresponding path program 1 times [2022-11-26 00:33:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:36,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067618679] [2022-11-26 00:33:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:36,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483184417] [2022-11-26 00:33:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:36,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:36,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:36,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:33:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:33:37,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-26 00:33:37,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:37,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067618679] [2022-11-26 00:33:37,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483184417] [2022-11-26 00:33:37,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483184417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:37,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:37,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:33:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312032451] [2022-11-26 00:33:37,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:37,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:33:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:33:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:33:37,264 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:37,864 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-11-26 00:33:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:33:37,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 142 [2022-11-26 00:33:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:37,868 INFO L225 Difference]: With dead ends: 236 [2022-11-26 00:33:37,869 INFO L226 Difference]: Without dead ends: 137 [2022-11-26 00:33:37,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:33:37,871 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:37,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 536 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:33:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-26 00:33:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-26 00:33:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2022-11-26 00:33:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2022-11-26 00:33:37,893 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 142 [2022-11-26 00:33:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:37,894 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2022-11-26 00:33:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2022-11-26 00:33:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-26 00:33:37,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:37,898 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:37,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:38,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash -811212753, now seen corresponding path program 2 times [2022-11-26 00:33:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:38,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583271010] [2022-11-26 00:33:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:38,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827319571] [2022-11-26 00:33:38,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:33:38,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:38,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:38,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:33:40,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:33:40,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:33:40,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:33:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-26 00:33:40,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:40,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:40,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583271010] [2022-11-26 00:33:40,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:40,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827319571] [2022-11-26 00:33:40,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827319571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:40,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:40,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:33:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41828133] [2022-11-26 00:33:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:33:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:33:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:33:40,790 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:42,733 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2022-11-26 00:33:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:33:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 151 [2022-11-26 00:33:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:42,738 INFO L225 Difference]: With dead ends: 201 [2022-11-26 00:33:42,738 INFO L226 Difference]: Without dead ends: 137 [2022-11-26 00:33:42,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:33:42,740 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:42,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 569 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-26 00:33:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-26 00:33:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-26 00:33:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (54), 51 states have call predecessors, (54), 51 states have call successors, (54) [2022-11-26 00:33:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-11-26 00:33:42,759 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 151 [2022-11-26 00:33:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:42,760 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-11-26 00:33:42,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:33:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-11-26 00:33:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-26 00:33:42,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:42,764 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:42,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:42,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:42,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1427972551, now seen corresponding path program 3 times [2022-11-26 00:33:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:42,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992784042] [2022-11-26 00:33:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:43,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:43,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145444735] [2022-11-26 00:33:43,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:33:43,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:43,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:43,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:43,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:33:44,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:33:44,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:33:44,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:33:44,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-26 00:33:44,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:44,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992784042] [2022-11-26 00:33:44,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145444735] [2022-11-26 00:33:44,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145444735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:44,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:44,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:33:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989715441] [2022-11-26 00:33:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:44,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:33:44,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:44,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:33:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:33:44,212 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-26 00:33:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:48,334 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2022-11-26 00:33:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:33:48,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 160 [2022-11-26 00:33:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:48,337 INFO L225 Difference]: With dead ends: 206 [2022-11-26 00:33:48,338 INFO L226 Difference]: Without dead ends: 137 [2022-11-26 00:33:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:33:48,339 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 21 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 647 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-26 00:33:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-26 00:33:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-26 00:33:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-11-26 00:33:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2022-11-26 00:33:48,356 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 160 [2022-11-26 00:33:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:48,357 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2022-11-26 00:33:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-26 00:33:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2022-11-26 00:33:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-26 00:33:48,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:48,362 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:48,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:33:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:48,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -539264431, now seen corresponding path program 1 times [2022-11-26 00:33:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857888571] [2022-11-26 00:33:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:48,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175321398] [2022-11-26 00:33:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:48,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:48,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:48,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:48,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a05f02-bcf5-4b84-bed1-c1706e3c6105/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:34:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 388 conjunts are in the unsatisfiable core [2022-11-26 00:34:14,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:14,900 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:34:14,901 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-26 00:34:15,523 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-26 00:34:15,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-11-26 00:34:16,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:34:16,977 INFO L321 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2022-11-26 00:34:16,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2022-11-26 00:34:22,667 INFO L321 Elim1Store]: treesize reduction 511, result has 32.0 percent of original size [2022-11-26 00:34:22,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 286 treesize of output 598 [2022-11-26 00:34:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:34:22,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 308 [2022-11-26 00:42:24,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:42:24,932 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-26 00:42:24,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 13 [2022-11-26 00:42:25,002 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:42:25,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:25,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:42:25,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2022-11-26 00:42:25,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:42:25,302 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-26 00:42:25,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 17 [2022-11-26 00:42:26,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:42:39,217 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 359 DAG size of output: 117 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-26 00:42:39,218 INFO L321 Elim1Store]: treesize reduction 1297, result has 15.8 percent of original size [2022-11-26 00:42:39,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 40 case distinctions, treesize of input 898 treesize of output 1602 [2022-11-26 00:46:04,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:04,180 INFO L217 Elim1Store]: Index analysis took 117 ms [2022-11-26 00:46:04,764 INFO L321 Elim1Store]: treesize reduction 102, result has 7.3 percent of original size [2022-11-26 00:46:04,764 INFO L350 Elim1Store]: Elim1 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 94 treesize of output 31 [2022-11-26 00:46:08,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:08,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:09,040 INFO L217 Elim1Store]: Index analysis took 156 ms