./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:17:35,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:17:35,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:17:35,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:17:35,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:17:35,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:17:35,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:17:35,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:17:35,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:17:35,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:17:35,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:17:35,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:17:35,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:17:35,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:17:35,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:17:35,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:17:35,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:17:35,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:17:35,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:17:35,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:17:35,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:17:35,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:17:35,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:17:35,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:17:35,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:17:35,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:17:35,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:17:35,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:17:35,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:17:35,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:17:35,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:17:35,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:17:35,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:17:35,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:17:35,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:17:35,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:17:35,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:17:35,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:17:35,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:17:35,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:17:35,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:17:35,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:17:35,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:17:35,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:17:35,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:17:35,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:17:35,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:17:35,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:17:35,878 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:17:35,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:17:35,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:17:35,879 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:17:35,879 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:17:35,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:17:35,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:17:35,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:17:35,880 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:17:35,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:17:35,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:17:35,880 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:17:35,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:17:35,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:17:35,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:17:35,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:17:35,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:17:35,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:17:35,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:17:35,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:17:35,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:17:35,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:17:35,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:17:35,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:35,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:17:35,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:17:35,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:17:35,885 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:17:35,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:17:35,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:17:35,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:17:35,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:17:35,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-11-21 00:17:36,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:17:36,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:17:36,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:17:36,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:17:36,179 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:17:36,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-21 00:17:36,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/e4d57b5c3/b8e58812f87643b4b6a91b54516f5f60/FLAGda355984b [2021-11-21 00:17:37,084 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:17:37,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-21 00:17:37,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/e4d57b5c3/b8e58812f87643b4b6a91b54516f5f60/FLAGda355984b [2021-11-21 00:17:37,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/e4d57b5c3/b8e58812f87643b4b6a91b54516f5f60 [2021-11-21 00:17:37,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:17:37,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:17:37,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:37,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:17:37,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:17:37,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:37" (1/1) ... [2021-11-21 00:17:37,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79597586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:37, skipping insertion in model container [2021-11-21 00:17:37,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:37" (1/1) ... [2021-11-21 00:17:37,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:17:37,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:17:38,026 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-21 00:17:38,033 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-21 00:17:39,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,012 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,013 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,015 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,033 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,041 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,477 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:17:39,479 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:17:39,480 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:17:39,481 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:17:39,482 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:17:39,483 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:17:39,484 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:17:39,484 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:17:39,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:17:39,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:17:39,634 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:17:39,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:39,679 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:17:39,694 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-21 00:17:39,695 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-21 00:17:39,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,811 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,811 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:17:39,936 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:17:39,937 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:17:39,938 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:17:39,939 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:17:39,945 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:17:39,946 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:17:39,946 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:17:39,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:17:39,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:17:39,948 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:17:39,993 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:17:40,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:40,198 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:17:40,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40 WrapperNode [2021-11-21 00:17:40,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:40,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:40,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:17:40,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:17:40,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,356 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 78 [2021-11-21 00:17:40,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:40,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:17:40,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:17:40,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:17:40,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:17:40,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:17:40,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:17:40,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:17:40,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (1/1) ... [2021-11-21 00:17:40,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:40,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:17:40,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:17:40,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:17:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:17:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:17:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:17:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-21 00:17:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-21 00:17:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:17:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:17:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:17:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:17:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:17:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:17:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:17:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:17:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:17:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-21 00:17:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-21 00:17:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:17:40,796 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:17:40,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:17:41,085 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:17:41,149 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:17:41,150 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:17:41,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:41 BoogieIcfgContainer [2021-11-21 00:17:41,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:17:41,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:17:41,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:17:41,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:17:41,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:17:37" (1/3) ... [2021-11-21 00:17:41,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ad14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:41, skipping insertion in model container [2021-11-21 00:17:41,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:40" (2/3) ... [2021-11-21 00:17:41,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ad14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:41, skipping insertion in model container [2021-11-21 00:17:41,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:41" (3/3) ... [2021-11-21 00:17:41,162 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-11-21 00:17:41,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:17:41,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:17:41,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:17:41,229 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:17:41,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:17:41,250 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) [2021-11-21 00:17:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:17:41,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:41,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:41,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -144968383, now seen corresponding path program 1 times [2021-11-21 00:17:41,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:41,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327396734] [2021-11-21 00:17:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:41,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:17:42,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:42,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327396734] [2021-11-21 00:17:42,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327396734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:42,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:42,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:17:42,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258586343] [2021-11-21 00:17:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:42,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:17:42,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:17:42,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:17:42,606 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) [2021-11-21 00:17:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:43,188 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2021-11-21 00:17:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:17:43,195 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 [2021-11-21 00:17:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:43,208 INFO L225 Difference]: With dead ends: 86 [2021-11-21 00:17:43,209 INFO L226 Difference]: Without dead ends: 48 [2021-11-21 00:17:43,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:17:43,228 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:43,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 181 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:17:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-21 00:17:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-21 00:17:43,307 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) [2021-11-21 00:17:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-11-21 00:17:43,315 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2021-11-21 00:17:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:43,316 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-11-21 00:17:43,317 INFO L471 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) [2021-11-21 00:17:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-11-21 00:17:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 00:17:43,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:43,319 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:17:43,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:17:43,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 728698747, now seen corresponding path program 1 times [2021-11-21 00:17:43,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878864701] [2021-11-21 00:17:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:43,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:17:44,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878864701] [2021-11-21 00:17:44,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878864701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:17:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953318369] [2021-11-21 00:17:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:44,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:17:44,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:17:44,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:17:44,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:17:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:44,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-21 00:17:44,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:17:44,515 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 00:17:44,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2021-11-21 00:17:44,528 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:17:44,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 40 [2021-11-21 00:17:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:17:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:17:50,333 INFO L354 Elim1Store]: treesize reduction 295, result has 15.7 percent of original size [2021-11-21 00:17:50,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 532 treesize of output 359 [2021-11-21 00:17:50,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:17:50,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:17:50,415 INFO L354 Elim1Store]: treesize reduction 309, result has 13.2 percent of original size [2021-11-21 00:17:50,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 186 treesize of output 97 [2021-11-21 00:17:52,736 INFO L354 Elim1Store]: treesize reduction 235, result has 39.0 percent of original size [2021-11-21 00:17:52,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 289 treesize of output 307 [2021-11-21 00:17:52,872 INFO L354 Elim1Store]: treesize reduction 277, result has 9.2 percent of original size [2021-11-21 00:17:52,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 287 treesize of output 239 [2021-11-21 00:17:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:17:52,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:17:55,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:17:55,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13827 treesize of output 13611 [2021-11-21 00:18:02,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:18:02,891 INFO L354 Elim1Store]: treesize reduction 1676, result has 0.8 percent of original size [2021-11-21 00:18:02,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 238093 treesize of output 206375 [2021-11-21 00:19:13,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:13,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2198 treesize of output 2150 [2021-11-21 00:19:14,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953318369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:19:14,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1833432733] [2021-11-21 00:19:14,611 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-21 00:19:14,612 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:19:14,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:19:14,622 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:19:14,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:19:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:14,740 INFO L354 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2021-11-21 00:19:14,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2021-11-21 00:19:14,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:14,973 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-21 00:19:14,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-21 00:19:15,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-21 00:19:15,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:15,180 INFO L354 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2021-11-21 00:19:15,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2021-11-21 00:19:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,500 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-21 00:19:15,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-21 00:19:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:15,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-21 00:19:15,761 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-21 00:19:15,782 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-21 00:19:16,510 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-21 00:19:18,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:18,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:18,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:18,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:18,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:18,584 INFO L354 Elim1Store]: treesize reduction 284, result has 26.0 percent of original size [2021-11-21 00:19:18,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1299 treesize of output 980 [2021-11-21 00:19:18,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:18,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:18,745 INFO L354 Elim1Store]: treesize reduction 85, result has 29.2 percent of original size [2021-11-21 00:19:18,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 317 [2021-11-21 00:19:18,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:19:18,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:18,990 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:19:18,993 INFO L158 Benchmark]: Toolchain (without parser) took 101376.78ms. Allocated memory was 92.3MB in the beginning and 490.7MB in the end (delta: 398.5MB). Free memory was 50.7MB in the beginning and 317.7MB in the end (delta: -267.0MB). Peak memory consumption was 131.4MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,993 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:19:18,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2578.91ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 50.5MB in the beginning and 48.9MB in the end (delta: 1.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 156.78ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 77.3MB in the end (delta: -28.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,994 INFO L158 Benchmark]: Boogie Preprocessor took 99.77ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,995 INFO L158 Benchmark]: RCFGBuilder took 695.15ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 50.8MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,995 INFO L158 Benchmark]: TraceAbstraction took 97837.45ms. Allocated memory was 117.4MB in the beginning and 490.7MB in the end (delta: 373.3MB). Free memory was 50.6MB in the beginning and 317.7MB in the end (delta: -267.0MB). Peak memory consumption was 106.6MB. Max. memory is 16.1GB. [2021-11-21 00:19:18,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2578.91ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 50.5MB in the beginning and 48.9MB in the end (delta: 1.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 156.78ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 77.3MB in the end (delta: -28.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.77ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 695.15ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 50.8MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 97837.45ms. Allocated memory was 117.4MB in the beginning and 490.7MB in the end (delta: 373.3MB). Free memory was 50.6MB in the beginning and 317.7MB in the end (delta: -267.0MB). Peak memory consumption was 106.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 00:19:19,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:19:21,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:19:21,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:19:21,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:19:21,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:19:21,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:19:21,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:19:21,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:19:21,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:19:21,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:19:21,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:19:21,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:19:21,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:19:21,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:19:21,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:19:21,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:19:21,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:19:21,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:19:21,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:19:21,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:19:21,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:19:21,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:19:21,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:19:21,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:19:21,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:19:21,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:19:21,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:19:21,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:19:21,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:19:21,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:19:21,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:19:21,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:19:21,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:19:21,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:19:21,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:19:21,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:19:21,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:19:21,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:19:21,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:19:21,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:19:21,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:19:21,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-21 00:19:21,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:19:21,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:19:21,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:19:21,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:19:21,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:19:21,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:19:21,870 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:19:21,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:19:21,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:19:21,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:19:21,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:19:21,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:19:21,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:19:21,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:19:21,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:19:21,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:19:21,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:19:21,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:19:21,875 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:19:21,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:19:21,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:19:21,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:19:21,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:19:21,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:19:21,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:19:21,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:21,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:19:21,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:19:21,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:19:21,878 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:19:21,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:19:21,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:19:21,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:19:21,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:19:21,880 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-11-21 00:19:22,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:19:22,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:19:22,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:19:22,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:19:22,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:19:22,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-21 00:19:22,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/5bffbb351/2f4344a546584021a2795c96329ba923/FLAG80e381a96 [2021-11-21 00:19:23,461 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:19:23,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-21 00:19:23,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/5bffbb351/2f4344a546584021a2795c96329ba923/FLAG80e381a96 [2021-11-21 00:19:23,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/data/5bffbb351/2f4344a546584021a2795c96329ba923 [2021-11-21 00:19:23,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:19:23,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:19:23,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:23,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:19:23,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:19:23,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:23" (1/1) ... [2021-11-21 00:19:23,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b2407e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:23, skipping insertion in model container [2021-11-21 00:19:23,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:23" (1/1) ... [2021-11-21 00:19:23,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:19:24,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:19:24,364 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-21 00:19:24,374 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-21 00:19:25,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,678 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,679 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:25,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:19:26,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:19:26,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:19:26,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:19:26,194 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:19:26,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:19:26,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:19:26,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:19:26,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:19:26,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:19:26,355 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:19:26,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:26,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:19:26,479 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-21 00:19:26,480 WARN L230 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_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-21 00:19:26,561 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:19:26,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:19:26,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:19:26,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:19:26,712 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:19:26,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:19:26,721 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:19:26,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:19:26,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:19:26,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:19:26,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:19:26,772 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:19:26,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:27,191 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:19:27,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27 WrapperNode [2021-11-21 00:19:27,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:27,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:27,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:19:27,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:19:27,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,377 INFO L137 Inliner]: procedures = 698, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 79 [2021-11-21 00:19:27,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:27,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:19:27,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:19:27,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:19:27,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:19:27,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:19:27,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:19:27,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:19:27,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (1/1) ... [2021-11-21 00:19:27,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:27,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:19:27,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:19:27,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-21 00:19:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-21 00:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:19:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:19:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:19:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:19:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-21 00:19:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-21 00:19:27,876 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:19:27,878 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:19:28,193 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:19:28,202 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:19:28,202 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:19:28,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:28 BoogieIcfgContainer [2021-11-21 00:19:28,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:19:28,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:19:28,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:19:28,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:19:28,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:19:23" (1/3) ... [2021-11-21 00:19:28,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c24d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:28, skipping insertion in model container [2021-11-21 00:19:28,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:27" (2/3) ... [2021-11-21 00:19:28,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c24d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:28, skipping insertion in model container [2021-11-21 00:19:28,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:28" (3/3) ... [2021-11-21 00:19:28,214 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-11-21 00:19:28,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:19:28,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:19:28,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:19:28,283 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:19:28,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:19:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 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) [2021-11-21 00:19:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:19:28,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:28,335 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:19:28,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:28,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash -946824848, now seen corresponding path program 1 times [2021-11-21 00:19:28,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:19:28,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718075036] [2021-11-21 00:19:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:28,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:19:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:19:28,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:19:28,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:19:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:28,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:19:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:19:28,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:19:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:19:28,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:19:28,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718075036] [2021-11-21 00:19:28,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718075036] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:19:28,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:19:28,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-21 00:19:28,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500377703] [2021-11-21 00:19:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:28,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:19:28,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:19:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:19:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:28,976 INFO L87 Difference]: Start difference. First operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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) [2021-11-21 00:19:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:29,047 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2021-11-21 00:19:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:19:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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 34 [2021-11-21 00:19:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:29,066 INFO L225 Difference]: With dead ends: 122 [2021-11-21 00:19:29,067 INFO L226 Difference]: Without dead ends: 58 [2021-11-21 00:19:29,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:29,085 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:29,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:19:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-21 00:19:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-21 00:19:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-21 00:19:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2021-11-21 00:19:29,173 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 34 [2021-11-21 00:19:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:29,185 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2021-11-21 00:19:29,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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) [2021-11-21 00:19:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2021-11-21 00:19:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:19:29,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:29,189 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:19:29,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:29,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:19:29,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1749038484, now seen corresponding path program 1 times [2021-11-21 00:19:29,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:19:29,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252981301] [2021-11-21 00:19:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:29,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:19:29,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:19:29,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:19:29,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:19:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:29,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-21 00:19:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:29,979 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 00:19:29,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-11-21 00:19:29,998 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:19:29,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 44 [2021-11-21 00:19:31,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:31,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:32,044 INFO L354 Elim1Store]: treesize reduction 279, result has 14.9 percent of original size [2021-11-21 00:19:32,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 946 treesize of output 582 [2021-11-21 00:19:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:19:32,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:19:53,237 WARN L227 SmtUtils]: Spent 21.16s on a formula simplification. DAG size of input: 84 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:19:53,239 INFO L354 Elim1Store]: treesize reduction 329, result has 16.7 percent of original size [2021-11-21 00:19:53,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 598 treesize of output 209 [2021-11-21 00:19:57,047 INFO L354 Elim1Store]: treesize reduction 225, result has 35.5 percent of original size [2021-11-21 00:19:57,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 303 treesize of output 280 [2021-11-21 00:19:57,395 INFO L354 Elim1Store]: treesize reduction 273, result has 9.3 percent of original size [2021-11-21 00:19:57,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 275 treesize of output 229 [2021-11-21 00:19:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:19:57,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:19:59,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1495 treesize of output 1415 [2021-11-21 00:20:01,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1740 treesize of output 1716 [2021-11-21 00:20:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:20:08,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:20:08,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252981301] [2021-11-21 00:20:08,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252981301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:08,450 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:08,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2021-11-21 00:20:08,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752834100] [2021-11-21 00:20:08,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:08,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:20:08,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:20:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:20:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=324, Unknown=1, NotChecked=0, Total=380 [2021-11-21 00:20:08,454 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 00:20:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:11,737 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2021-11-21 00:20:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:20:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2021-11-21 00:20:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:11,742 INFO L225 Difference]: With dead ends: 89 [2021-11-21 00:20:11,742 INFO L226 Difference]: Without dead ends: 87 [2021-11-21 00:20:11,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=82, Invalid=517, Unknown=1, NotChecked=0, Total=600 [2021-11-21 00:20:11,744 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 31 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:11,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 820 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 66 Unchecked, 0.6s Time] [2021-11-21 00:20:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-21 00:20:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-11-21 00:20:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-21 00:20:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-11-21 00:20:11,762 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 34 [2021-11-21 00:20:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:11,763 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-11-21 00:20:11,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 00:20:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-11-21 00:20:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:20:11,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:11,765 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:20:11,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:20:11,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:20:11,981 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1736582186, now seen corresponding path program 1 times [2021-11-21 00:20:11,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:20:11,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275727758] [2021-11-21 00:20:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:11,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:20:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:20:11,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:20:11,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275b4490-5fa9-4c3e-8d7a-e31e7d10d6ea/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:20:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:12,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:20:12,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:22:29,755 WARN L227 SmtUtils]: Spent 2.29m on a formula simplification. DAG size of input: 127 DAG size of output: 87 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:22:29,756 INFO L354 Elim1Store]: treesize reduction 1327, result has 33.8 percent of original size [2021-11-21 00:22:29,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1143 treesize of output 883 [2021-11-21 00:22:29,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6495 treesize of output 6159 [2021-11-21 00:22:30,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:30,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:30,497 INFO L354 Elim1Store]: treesize reduction 90, result has 32.3 percent of original size [2021-11-21 00:22:30,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 510 treesize of output 458 [2021-11-21 00:22:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:33,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:33,874 INFO L354 Elim1Store]: treesize reduction 62, result has 54.7 percent of original size [2021-11-21 00:22:33,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1206 treesize of output 1168