./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/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_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:37:43,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:43,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:43,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:43,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:43,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:43,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:43,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:43,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:43,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:43,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:43,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:43,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:43,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:43,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:43,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:43,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:43,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:43,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:43,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:43,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:43,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:43,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:43,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:43,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:43,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:43,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:43,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:43,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:43,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:43,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:43,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:43,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:43,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:43,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:43,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:43,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:43,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:43,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:43,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:43,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:43,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:37:43,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:43,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:43,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:43,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:43,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:43,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:43,784 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:43,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:43,785 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:43,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:43,786 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:43,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:43,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:43,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:43,787 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:43,787 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:43,787 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:43,788 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:43,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:43,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:43,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:43,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:43,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:43,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:43,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:43,790 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:43,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:43,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:43,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:43,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:43,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:43,791 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:43,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:43,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:43,792 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:43,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:43,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:43,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:43,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2022-10-17 17:37:44,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:44,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:44,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:44,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:44,113 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:44,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2022-10-17 17:37:44,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/data/10a0f9e7f/762a2166929840c2a30bc287eebd25f5/FLAG3df60c1a9 [2022-10-17 17:37:45,061 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:45,063 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2022-10-17 17:37:45,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/data/10a0f9e7f/762a2166929840c2a30bc287eebd25f5/FLAG3df60c1a9 [2022-10-17 17:37:45,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/data/10a0f9e7f/762a2166929840c2a30bc287eebd25f5 [2022-10-17 17:37:45,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:45,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:45,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:45,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:45,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:45,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:45" (1/1) ... [2022-10-17 17:37:45,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8aa186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:45, skipping insertion in model container [2022-10-17 17:37:45,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:45" (1/1) ... [2022-10-17 17:37:45,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:45,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:46,123 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_64692b40-3a28-41f9-bfcd-d284f726123f/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2022-10-17 17:37:46,131 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_64692b40-3a28-41f9-bfcd-d284f726123f/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2022-10-17 17:37:47,276 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,277 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,277 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,278 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,280 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,295 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,296 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,307 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,308 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:47,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:37:47,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:37:47,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:37:47,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:37:47,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:37:47,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:37:47,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:37:47,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:37:47,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:37:47,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:37:47,951 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:37:48,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:48,083 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:48,121 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_64692b40-3a28-41f9-bfcd-d284f726123f/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2022-10-17 17:37:48,122 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_64692b40-3a28-41f9-bfcd-d284f726123f/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2022-10-17 17:37:48,197 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,202 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,206 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,207 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,227 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,232 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,232 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,235 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,235 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:48,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:37:48,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:37:48,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:37:48,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:37:48,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:37:48,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:37:48,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:37:48,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:37:48,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:37:48,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:37:48,355 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:37:48,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:48,581 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:48,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48 WrapperNode [2022-10-17 17:37:48,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:48,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:48,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:48,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:48,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,750 INFO L138 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 78 [2022-10-17 17:37:48,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:48,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:48,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:48,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:48,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:48,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:48,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:48,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:48,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (1/1) ... [2022-10-17 17:37:48,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:48,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:37:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:37:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-10-17 17:37:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-10-17 17:37:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:37:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:37:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:37:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-10-17 17:37:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-10-17 17:37:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:49,258 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:49,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:49,542 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:49,679 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:49,686 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:37:49,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:49 BoogieIcfgContainer [2022-10-17 17:37:49,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:49,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:49,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:49,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:49,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:45" (1/3) ... [2022-10-17 17:37:49,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4487f91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:49, skipping insertion in model container [2022-10-17 17:37:49,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:48" (2/3) ... [2022-10-17 17:37:49,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4487f91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:49, skipping insertion in model container [2022-10-17 17:37:49,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:49" (3/3) ... [2022-10-17 17:37:49,709 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2022-10-17 17:37:49,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:49,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:49,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:49,804 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24823b40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:49,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-17 17:37:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:37:49,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:49,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:49,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash -144968383, now seen corresponding path program 1 times [2022-10-17 17:37:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145895715] [2022-10-17 17:37:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:37:56,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:56,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145895715] [2022-10-17 17:37:56,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145895715] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:56,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:56,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 17:37:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414396914] [2022-10-17 17:37:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:37:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:37:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:37:56,566 INFO L87 Difference]: Start difference. First operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:37:57,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:57,060 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2022-10-17 17:37:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:37:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2022-10-17 17:37:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:57,071 INFO L225 Difference]: With dead ends: 86 [2022-10-17 17:37:57,071 INFO L226 Difference]: Without dead ends: 48 [2022-10-17 17:37:57,075 INFO L412 NwaCegarLoop]: 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 [2022-10-17 17:37:57,079 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:57,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 170 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:37:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-17 17:37:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-10-17 17:37:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-17 17:37:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-10-17 17:37:57,130 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2022-10-17 17:37:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:57,130 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-10-17 17:37:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:37:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-10-17 17:37:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 17:37:57,133 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:57,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:37:57,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash 728698747, now seen corresponding path program 1 times [2022-10-17 17:37:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:57,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986022275] [2022-10-17 17:37:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:38:00,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:00,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986022275] [2022-10-17 17:38:00,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986022275] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:38:00,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367790849] [2022-10-17 17:38:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:00,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:00,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:00,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:38:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:01,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 81 conjunts are in the unsatisfiable core [2022-10-17 17:38:01,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:01,238 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:38:01,260 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:38:01,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2022-10-17 17:38:01,275 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 17:38:01,275 INFO L390 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 35 treesize of output 27 [2022-10-17 17:38:02,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 81 [2022-10-17 17:38:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 122 [2022-10-17 17:38:02,175 INFO L356 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2022-10-17 17:38:02,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: v_arrayElimArr_3 input size 71 context size 71 output size 71 [2022-10-17 17:38:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038243118] [2022-10-17 17:38:02,201 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-10-17 17:38:02,201 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:02,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:02,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:02,212 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:38:02,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:02,360 INFO L356 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2022-10-17 17:38:02,363 INFO L390 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 [2022-10-17 17:38:02,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:02,442 INFO L356 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2022-10-17 17:38:02,444 INFO L390 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 [2022-10-17 17:38:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,686 INFO L356 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2022-10-17 17:38:02,687 INFO L390 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 [2022-10-17 17:38:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-10-17 17:38:02,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-10-17 17:38:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:03,090 INFO L356 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2022-10-17 17:38:03,091 INFO L390 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 [2022-10-17 17:38:04,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:04,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:04,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:04,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:04,632 INFO L356 Elim1Store]: treesize reduction 276, result has 26.6 percent of original size [2022-10-17 17:38:04,633 INFO L390 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 1201 treesize of output 882 [2022-10-17 17:38:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:04,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:04,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:04,849 INFO L356 Elim1Store]: treesize reduction 85, result has 29.2 percent of original size [2022-10-17 17:38:04,850 INFO L390 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 809 treesize of output 359 [2022-10-17 17:38:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:05,047 INFO L356 Elim1Store]: treesize reduction 48, result has 42.2 percent of original size [2022-10-17 17:38:05,048 INFO L390 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 210 treesize of output 92 [2022-10-17 17:38:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:05,194 INFO L356 Elim1Store]: treesize reduction 48, result has 42.2 percent of original size [2022-10-17 17:38:05,194 INFO L390 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 210 treesize of output 92 [2022-10-17 17:38:05,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-10-17 17:38:05,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-10-17 17:38:06,697 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2022-10-17 17:38:06,706 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 51 for LOIs [2022-10-17 17:38:06,733 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 20 for LOIs [2022-10-17 17:38:06,829 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 18 for LOIs [2022-10-17 17:38:06,919 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:38:09,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '318#(and (<= 0 |__VERIFIER_assert_#in~cond|) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (= 5 |~#s_can_fail_allocator_static~0.base|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:38:09,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:38:09,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:38:09,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-17 17:38:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304687256] [2022-10-17 17:38:09,835 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 17:38:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 17:38:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 17:38:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2022-10-17 17:38:09,838 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 17:38:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:10,494 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-10-17 17:38:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:38:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.75) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-10-17 17:38:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:10,498 INFO L225 Difference]: With dead ends: 54 [2022-10-17 17:38:10,498 INFO L226 Difference]: Without dead ends: 52 [2022-10-17 17:38:10,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2022-10-17 17:38:10,501 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:10,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 177 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:38:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-17 17:38:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-17 17:38:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-17 17:38:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-10-17 17:38:10,517 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 28 [2022-10-17 17:38:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:10,517 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-10-17 17:38:10,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.75) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 17:38:10,518 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-10-17 17:38:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 17:38:10,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:10,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:10,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64692b40-3a28-41f9-bfcd-d284f726123f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:10,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash 38185929, now seen corresponding path program 1 times [2022-10-17 17:38:10,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:10,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880510955] [2022-10-17 17:38:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:10,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat