./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba --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 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- 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-b5237d8 [2022-11-22 01:41:14,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:41:14,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:41:14,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:41:14,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:41:14,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:41:14,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:41:14,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:41:14,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:41:14,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:41:14,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:41:14,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:41:14,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:41:14,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:41:14,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:41:14,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:41:14,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:41:14,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:41:14,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:41:14,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:41:14,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:41:14,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:41:14,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:41:14,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:41:14,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:41:14,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:41:14,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:41:14,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:41:14,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:41:14,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:41:14,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:41:14,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:41:14,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:41:14,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:41:14,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:41:14,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:41:14,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:41:14,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:41:14,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:41:14,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:41:14,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:41:14,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:41:14,634 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:41:14,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:41:14,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:41:14,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:41:14,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:41:14,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:41:14,637 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:41:14,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:41:14,637 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:41:14,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:41:14,638 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:41:14,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:41:14,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:41:14,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:41:14,638 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:41:14,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:41:14,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:41:14,639 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:41:14,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:41:14,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:41:14,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:41:14,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:41:14,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:41:14,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:41:14,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:41:14,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:41:14,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:41:14,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:41:14,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:41:14,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:14,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:41:14,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:41:14,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:41:14,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:41:14,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:41:14,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:41:14,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:41:14,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:41:14,645 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2022-11-22 01:41:14,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:41:14,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:41:14,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:41:14,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:41:14,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:41:14,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2022-11-22 01:41:18,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:41:18,697 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:41:18,698 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2022-11-22 01:41:18,746 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/data/de7cbb723/87182de0dfe24382b09d04521cabb2a5/FLAGbb153a99c [2022-11-22 01:41:18,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/data/de7cbb723/87182de0dfe24382b09d04521cabb2a5 [2022-11-22 01:41:18,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:41:18,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:41:18,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:18,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:41:18,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:41:18,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:18" (1/1) ... [2022-11-22 01:41:18,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88b59c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:18, skipping insertion in model container [2022-11-22 01:41:18,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:18" (1/1) ... [2022-11-22 01:41:18,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:41:18,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:41:19,164 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2022-11-22 01:41:19,173 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2022-11-22 01:41:20,303 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,304 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,304 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,321 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,322 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,324 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,325 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,327 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,328 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,329 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,330 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:20,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 01:41:20,793 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 01:41:20,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 01:41:20,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 01:41:20,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 01:41:20,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 01:41:20,800 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 01:41:20,801 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 01:41:20,802 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 01:41:20,803 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 01:41:20,999 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 01:41:21,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:21,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:41:21,070 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2022-11-22 01:41:21,071 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_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2022-11-22 01:41:21,188 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,190 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,190 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,212 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,213 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,214 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,214 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,216 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,216 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,217 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,217 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:41:21,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 01:41:21,292 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 01:41:21,293 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 01:41:21,294 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 01:41:21,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 01:41:21,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 01:41:21,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 01:41:21,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 01:41:21,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 01:41:21,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 01:41:21,359 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 01:41:21,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:21,631 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:41:21,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21 WrapperNode [2022-11-22 01:41:21,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:21,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:21,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:41:21,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:41:21,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,776 INFO L138 Inliner]: procedures = 679, calls = 1047, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 77 [2022-11-22 01:41:21,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:21,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:41:21,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:41:21,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:41:21,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:41:21,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:41:21,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:41:21,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:41:21,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (1/1) ... [2022-11-22 01:41:21,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:21,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:21,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:41:21,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:41:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:41:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 01:41:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 01:41:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-22 01:41:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-22 01:41:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:41:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:41:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:41:21,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:41:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:41:21,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:41:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:41:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:41:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:41:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-11-22 01:41:21,927 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-11-22 01:41:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:41:22,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:41:22,303 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:41:22,598 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:41:22,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:41:22,677 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:41:22,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:22 BoogieIcfgContainer [2022-11-22 01:41:22,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:41:22,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:41:22,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:41:22,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:41:22,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:41:18" (1/3) ... [2022-11-22 01:41:22,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45889d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:22, skipping insertion in model container [2022-11-22 01:41:22,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:21" (2/3) ... [2022-11-22 01:41:22,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45889d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:22, skipping insertion in model container [2022-11-22 01:41:22,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:22" (3/3) ... [2022-11-22 01:41:22,697 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2022-11-22 01:41:22,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:41:22,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:41:22,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:41:22,772 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;@69272573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:41:22,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:41:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-22 01:41:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:41:22,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:22,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:22,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash -144968383, now seen corresponding path program 1 times [2022-11-22 01:41:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:22,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989615471] [2022-11-22 01:41:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:41:31,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:31,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989615471] [2022-11-22 01:41:31,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989615471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:31,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:31,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:41:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342603532] [2022-11-22 01:41:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:31,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:41:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:41:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:31,661 INFO L87 Difference]: Start difference. First operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:41:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:32,306 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2022-11-22 01:41:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:41:32,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2022-11-22 01:41:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:32,321 INFO L225 Difference]: With dead ends: 86 [2022-11-22 01:41:32,321 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:41:32,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:41:32,340 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:32,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 170 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:41:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:41:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-22 01:41:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-22 01:41:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-11-22 01:41:32,416 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2022-11-22 01:41:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:32,417 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-11-22 01:41:32,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:41:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-11-22 01:41:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 01:41:32,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:32,421 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:41:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:41:32,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash 728698747, now seen corresponding path program 1 times [2022-11-22 01:41:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:32,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501738683] [2022-11-22 01:41:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:41:35,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501738683] [2022-11-22 01:41:35,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501738683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453137907] [2022-11-22 01:41:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:35,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:35,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:35,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0e286c3-0221-42a8-bf85-f7ff0d3d2e7e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:41:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:35,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-22 01:41:35,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:35,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-22 01:41:36,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-11-22 01:41:36,030 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:41:36,031 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 52 [2022-11-22 01:41:36,066 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 01:41:36,066 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-22 01:41:36,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:41:36,113 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-22 01:41:36,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2022-11-22 01:41:37,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:37,311 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-22 01:41:37,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 306 treesize of output 236 [2022-11-22 01:41:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:37,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 204 [2022-11-22 01:41:37,360 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 213 treesize of output 203 [2022-11-22 01:41:37,379 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 158 [2022-11-22 01:41:37,486 INFO L321 Elim1Store]: treesize reduction 142, result has 12.9 percent of original size [2022-11-22 01:41:37,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 237 [2022-11-22 01:41:37,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 168 [2022-11-22 01:41:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:37,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-11-22 01:41:37,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 156 treesize of output 145 [2022-11-22 01:41:37,631 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 77 treesize of output 76 [2022-11-22 01:41:38,776 INFO L321 Elim1Store]: treesize reduction 569, result has 9.3 percent of original size [2022-11-22 01:41:38,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 140030452 treesize of output 111547391