./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- 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 [2022-11-25 23:54:34,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:54:34,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:54:34,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:54:34,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:54:34,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:54:34,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:54:34,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:54:34,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:54:34,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:54:34,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:54:34,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:54:34,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:54:34,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:54:34,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:54:34,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:54:34,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:54:34,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:54:34,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:54:34,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:54:34,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:54:34,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:54:34,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:54:34,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:54:34,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:54:34,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:54:34,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:54:34,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:54:34,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:54:34,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:54:34,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:54:34,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:54:34,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:54:34,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:54:34,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:54:34,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:54:34,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:54:34,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:54:34,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:54:34,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:54:34,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:54:34,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:54:34,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:54:34,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:54:34,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:54:34,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:54:34,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:54:34,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:54:34,363 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:54:34,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:54:34,364 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:54:34,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:54:34,364 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:54:34,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:54:34,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:54:34,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:54:34,365 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:54:34,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:54:34,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:54:34,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:54:34,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:54:34,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:54:34,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:54:34,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:54:34,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:54:34,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:54:34,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:54:34,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:54:34,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:54:34,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:54:34,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:54:34,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:34,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:54:34,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:54:34,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:54:34,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:54:34,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:54:34,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:54:34,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:54:34,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:54:34,371 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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-11-25 23:54:34,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:54:34,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:54:34,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:54:34,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:54:34,732 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:54:34,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-11-25 23:54:37,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:54:38,278 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:54:38,279 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-11-25 23:54:38,309 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/data/f840ca3df/6f600af19849430f9c0da076b3c031d3/FLAGeaad3e477 [2022-11-25 23:54:38,327 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/data/f840ca3df/6f600af19849430f9c0da076b3c031d3 [2022-11-25 23:54:38,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:54:38,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:54:38,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:38,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:54:38,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:54:38,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:38" (1/1) ... [2022-11-25 23:54:38,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cb75dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:38, skipping insertion in model container [2022-11-25 23:54:38,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:38" (1/1) ... [2022-11-25 23:54:38,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:54:38,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:54:38,759 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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-11-25 23:54:38,768 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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-11-25 23:54:39,746 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:54:39,829 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-11-25 23:54:39,831 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,832 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,832 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,833 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,834 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,835 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-11-25 23:54:39,849 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,850 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,852 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,853 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,855 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,856 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,857 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,858 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:39,956 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:39,956 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:39,957 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:39,962 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:54:39,965 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:54:39,965 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:54:40,325 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:54:40,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:54:40,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:54:40,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:54:40,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:54:40,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:54:40,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:54:40,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:54:40,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:54:40,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:54:40,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:54:40,518 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,526 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,583 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:54:40,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:40,625 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:54:40,655 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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-11-25 23:54:40,655 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_f4d9acf6-cbda-49df-9b2d-2e32316c255d/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-11-25 23:54:40,734 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:54:40,767 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-11-25 23:54:40,768 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,772 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,772 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,773 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,774 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,775 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-11-25 23:54:40,781 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,785 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,786 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,787 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,789 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,791 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,791 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,791 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,801 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:40,804 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:40,806 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:54:40,812 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:54:40,817 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:54:40,819 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:54:40,853 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:54:40,855 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:54:40,856 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:54:40,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:54:40,859 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:54:40,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:54:40,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:54:40,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:54:40,862 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:54:40,863 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:54:40,864 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:54:40,901 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,905 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:54:40,934 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:54:40,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:41,149 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:54:41,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41 WrapperNode [2022-11-25 23:54:41,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:41,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:41,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:54:41,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:54:41,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,306 INFO L138 Inliner]: procedures = 691, calls = 1683, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 683 [2022-11-25 23:54:41,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:41,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:54:41,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:54:41,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:54:41,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:54:41,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:54:41,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:54:41,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:54:41,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (1/1) ... [2022-11-25 23:54:41,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:41,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:41,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:54:41,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:54:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-11-25 23:54:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-11-25 23:54:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:54:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-25 23:54:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-25 23:54:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-25 23:54:41,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-25 23:54:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:54:41,528 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:54:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:54:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 23:54:41,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 23:54:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:54:41,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:54:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:54:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:54:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:54:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:54:41,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:54:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:54:41,531 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:54:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 23:54:41,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 23:54:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-25 23:54:41,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-25 23:54:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-25 23:54:41,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-25 23:54:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:54:41,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:54:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:54:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:54:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:54:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 23:54:41,533 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 23:54:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-25 23:54:41,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-25 23:54:41,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:54:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-11-25 23:54:41,539 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-11-25 23:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-11-25 23:54:41,539 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-11-25 23:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-25 23:54:41,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-25 23:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:54:41,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:54:41,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:54:43,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:54:43,278 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:54:43,278 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:54:43,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:43 BoogieIcfgContainer [2022-11-25 23:54:43,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:54:43,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:54:43,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:54:43,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:54:43,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:54:38" (1/3) ... [2022-11-25 23:54:43,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728e1a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:43, skipping insertion in model container [2022-11-25 23:54:43,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:41" (2/3) ... [2022-11-25 23:54:43,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728e1a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:43, skipping insertion in model container [2022-11-25 23:54:43,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:43" (3/3) ... [2022-11-25 23:54:43,293 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-11-25 23:54:43,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:54:43,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:54:43,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:54:43,395 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;@1e60ee43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:54:43,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:54:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-25 23:54:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:54:43,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:43,413 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:43,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1395494391, now seen corresponding path program 1 times [2022-11-25 23:54:43,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:43,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109965698] [2022-11-25 23:54:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 23:54:44,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109965698] [2022-11-25 23:54:44,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109965698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:44,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479200741] [2022-11-25 23:54:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:44,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:44,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:44,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:54:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:45,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:54:45,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 23:54:45,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:45,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479200741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:45,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:54:45,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 23:54:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789570794] [2022-11-25 23:54:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:54:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:54:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:54:45,282 INFO L87 Difference]: Start difference. First operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:54:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:45,968 INFO L93 Difference]: Finished difference Result 281 states and 414 transitions. [2022-11-25 23:54:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:54:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 67 [2022-11-25 23:54:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:45,985 INFO L225 Difference]: With dead ends: 281 [2022-11-25 23:54:45,986 INFO L226 Difference]: Without dead ends: 155 [2022-11-25 23:54:45,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:54:46,002 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 29 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:46,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 593 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:54:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-25 23:54:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-25 23:54:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2022-11-25 23:54:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2022-11-25 23:54:46,059 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 67 [2022-11-25 23:54:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:46,060 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2022-11-25 23:54:46,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:54:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2022-11-25 23:54:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:54:46,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:46,064 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:46,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:46,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 23:54:46,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:46,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2016367126, now seen corresponding path program 1 times [2022-11-25 23:54:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:46,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370246669] [2022-11-25 23:54:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:46,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:54:46,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655159991] [2022-11-25 23:54:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:46,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:46,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:54:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:46,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:54:46,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 23:54:47,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:47,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:47,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370246669] [2022-11-25 23:54:47,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:54:47,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655159991] [2022-11-25 23:54:47,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655159991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:47,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:47,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:54:47,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106668007] [2022-11-25 23:54:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:54:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:54:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:54:47,014 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 23:54:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:47,808 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2022-11-25 23:54:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:54:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 76 [2022-11-25 23:54:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:47,820 INFO L225 Difference]: With dead ends: 270 [2022-11-25 23:54:47,820 INFO L226 Difference]: Without dead ends: 155 [2022-11-25 23:54:47,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:54:47,822 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 823 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:54:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-25 23:54:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-25 23:54:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-11-25 23:54:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2022-11-25 23:54:47,873 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 76 [2022-11-25 23:54:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:47,874 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2022-11-25 23:54:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 23:54:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2022-11-25 23:54:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-25 23:54:47,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:47,877 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 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] [2022-11-25 23:54:47,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 23:54:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 23:54:48,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:48,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash 214627117, now seen corresponding path program 2 times [2022-11-25 23:54:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:48,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132637017] [2022-11-25 23:54:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:48,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:54:48,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007009842] [2022-11-25 23:54:48,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:54:48,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:48,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:48,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:48,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:54:48,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 23:54:48,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:54:48,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 23:54:48,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 23:54:48,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:48,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:48,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132637017] [2022-11-25 23:54:48,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:54:48,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007009842] [2022-11-25 23:54:48,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007009842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:48,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:48,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:54:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2609641] [2022-11-25 23:54:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:54:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:54:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:48,761 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 23:54:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:49,316 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2022-11-25 23:54:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:54:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 85 [2022-11-25 23:54:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:49,323 INFO L225 Difference]: With dead ends: 268 [2022-11-25 23:54:49,324 INFO L226 Difference]: Without dead ends: 155 [2022-11-25 23:54:49,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:49,328 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:49,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:54:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-25 23:54:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-25 23:54:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-11-25 23:54:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2022-11-25 23:54:49,359 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 85 [2022-11-25 23:54:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:49,360 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2022-11-25 23:54:49,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 23:54:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2022-11-25 23:54:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 23:54:49,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:49,370 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:49,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:49,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1757082170, now seen corresponding path program 3 times [2022-11-25 23:54:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:49,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689436573] [2022-11-25 23:54:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:49,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:54:49,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773366867] [2022-11-25 23:54:49,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:54:49,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:49,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:49,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:49,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:54:50,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:54:50,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:54:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:54:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 23:54:50,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:50,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:50,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689436573] [2022-11-25 23:54:50,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:54:50,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773366867] [2022-11-25 23:54:50,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773366867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:50,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:50,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:54:50,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941236594] [2022-11-25 23:54:50,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:50,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:54:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:54:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:54:50,445 INFO L87 Difference]: Start difference. First operand 155 states and 212 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 23:54:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:51,191 INFO L93 Difference]: Finished difference Result 277 states and 384 transitions. [2022-11-25 23:54:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:54:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2022-11-25 23:54:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:51,193 INFO L225 Difference]: With dead ends: 277 [2022-11-25 23:54:51,193 INFO L226 Difference]: Without dead ends: 165 [2022-11-25 23:54:51,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:54:51,195 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 69 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:51,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1124 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:54:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-25 23:54:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-25 23:54:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-11-25 23:54:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2022-11-25 23:54:51,209 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 94 [2022-11-25 23:54:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:51,209 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2022-11-25 23:54:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 23:54:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2022-11-25 23:54:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 23:54:51,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:51,211 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:51,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:54:51,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:51,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -434979561, now seen corresponding path program 1 times [2022-11-25 23:54:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649800373] [2022-11-25 23:54:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:51,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:51,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:54:51,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916876755] [2022-11-25 23:54:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:51,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:51,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:51,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:51,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d9acf6-cbda-49df-9b2d-2e32316c255d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:54:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:53,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 398 conjunts are in the unsatisfiable core [2022-11-25 23:54:53,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:53,343 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 23:54:54,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-25 23:54:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:54:54,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 23:54:54,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:54:54,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 23:58:46,968 WARN L233 SmtUtils]: Spent 3.63m on a formula simplification. DAG size of input: 109 DAG size of output: 62 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:58:46,969 INFO L321 Elim1Store]: treesize reduction 202, result has 38.6 percent of original size [2022-11-25 23:58:46,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 211 treesize of output 352 [2022-11-25 23:58:47,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:58:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:58:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:58:47,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 231 [2022-11-25 23:59:19,062 WARN L233 SmtUtils]: Spent 31.99s on a formula simplification. DAG size of input: 23 DAG size of output: 15 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:59:19,063 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 23:59:19,063 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 178 [2022-11-25 23:59:48,858 WARN L233 SmtUtils]: Spent 29.74s on a formula simplification. DAG size of input: 23 DAG size of output: 15 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:59:48,859 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 23:59:48,859 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 172