./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:12:01,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:12:01,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:12:01,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:12:01,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:12:01,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:12:01,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:12:01,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:12:01,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:12:01,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:12:01,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:12:01,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:12:01,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:12:01,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:12:01,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:12:01,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:12:01,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:12:01,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:12:01,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:12:01,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:12:01,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:12:01,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:12:01,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:12:01,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:12:01,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:12:01,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:12:01,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:12:01,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:12:01,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:12:01,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:12:01,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:12:01,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:12:01,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:12:01,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:12:01,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:12:01,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:12:01,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:12:01,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:12:01,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:12:01,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:12:01,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:12:01,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:12:01,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:12:01,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:12:01,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:12:01,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:12:01,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:12:01,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:12:01,323 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:12:01,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:12:01,324 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:12:01,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:12:01,325 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:12:01,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:12:01,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:12:01,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:12:01,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:12:01,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:12:01,327 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:12:01,327 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:12:01,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:12:01,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:12:01,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:12:01,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:12:01,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:12:01,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:12:01,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:12:01,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:12:01,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:12:01,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:12:01,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:12:01,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:01,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:12:01,332 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:12:01,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:12:01,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:12:01,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:12:01,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:12:01,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:12:01,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:12:01,333 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_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2022-11-22 02:12:01,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:12:01,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:12:01,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:12:01,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:12:01,666 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:12:01,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2022-11-22 02:12:05,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:12:05,610 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:12:05,611 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2022-11-22 02:12:05,649 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/data/60518ecea/afb6d591e85a4529a80c7a2beed9ff42/FLAG315a53b37 [2022-11-22 02:12:05,672 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/data/60518ecea/afb6d591e85a4529a80c7a2beed9ff42 [2022-11-22 02:12:05,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:12:05,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:12:05,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:05,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:12:05,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:12:05,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:05" (1/1) ... [2022-11-22 02:12:05,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78741043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:05, skipping insertion in model container [2022-11-22 02:12:05,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:05" (1/1) ... [2022-11-22 02:12:05,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:12:05,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:12:06,085 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2022-11-22 02:12:06,093 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2022-11-22 02:12:07,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,014 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,033 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,038 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,040 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,043 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,050 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,051 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,059 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,059 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:12:07,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:12:07,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:12:07,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:12:07,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:12:07,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:12:07,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:12:07,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:12:07,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:12:07,592 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:12:07,766 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:12:07,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:07,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:12:07,856 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2022-11-22 02:12:07,857 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2022-11-22 02:12:07,904 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,905 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,905 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,906 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,907 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,916 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,919 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,919 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:07,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:12:08,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:12:08,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:12:08,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:12:08,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:12:08,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:12:08,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:12:08,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:12:08,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:12:08,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:12:08,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:12:08,052 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:12:08,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:08,325 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:12:08,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08 WrapperNode [2022-11-22 02:12:08,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:08,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:08,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:12:08,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:12:08,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,540 INFO L138 Inliner]: procedures = 679, calls = 1079, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 213 [2022-11-22 02:12:08,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:08,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:12:08,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:12:08,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:12:08,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:12:08,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:12:08,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:12:08,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:12:08,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (1/1) ... [2022-11-22 02:12:08,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:08,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:12:08,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:12:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2022-11-22 02:12:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2022-11-22 02:12:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:12:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:12:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:12:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-22 02:12:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-22 02:12:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2022-11-22 02:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2022-11-22 02:12:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:12:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-22 02:12:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-22 02:12:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:12:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:12:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:12:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:12:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-22 02:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-22 02:12:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:12:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:12:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:12:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:12:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 02:12:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 02:12:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:12:09,183 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:12:09,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:12:09,826 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:12:09,991 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:12:09,992 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:12:09,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:12:09 BoogieIcfgContainer [2022-11-22 02:12:09,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:12:10,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:12:10,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:12:10,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:12:10,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:12:05" (1/3) ... [2022-11-22 02:12:10,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b966bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:12:10, skipping insertion in model container [2022-11-22 02:12:10,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:08" (2/3) ... [2022-11-22 02:12:10,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b966bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:12:10, skipping insertion in model container [2022-11-22 02:12:10,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:12:09" (3/3) ... [2022-11-22 02:12:10,016 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2022-11-22 02:12:10,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:12:10,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:12:10,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:12:10,154 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;@64c9c967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:12:10,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:12:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-22 02:12:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 02:12:10,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:10,173 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:10,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1308370605, now seen corresponding path program 1 times [2022-11-22 02:12:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:10,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182634887] [2022-11-22 02:12:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 02:12:11,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182634887] [2022-11-22 02:12:11,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182634887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091755942] [2022-11-22 02:12:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:11,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:11,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:11,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:11,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:12:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:12,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 02:12:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 02:12:12,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:12:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091755942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:12,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:12:12,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2022-11-22 02:12:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728977148] [2022-11-22 02:12:12,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:12:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:12:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:12:12,850 INFO L87 Difference]: Start difference. First operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 02:12:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:13,408 INFO L93 Difference]: Finished difference Result 166 states and 254 transitions. [2022-11-22 02:12:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:12:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 62 [2022-11-22 02:12:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:13,420 INFO L225 Difference]: With dead ends: 166 [2022-11-22 02:12:13,421 INFO L226 Difference]: Without dead ends: 87 [2022-11-22 02:12:13,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:12:13,428 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 42 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:13,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 463 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:12:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-22 02:12:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-22 02:12:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 43 states have (on average 1.255813953488372) internal successors, (54), 48 states have internal predecessors, (54), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2022-11-22 02:12:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2022-11-22 02:12:13,484 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 62 [2022-11-22 02:12:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:13,484 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2022-11-22 02:12:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 02:12:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2022-11-22 02:12:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 02:12:13,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:13,488 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:13,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 02:12:13,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash -825605775, now seen corresponding path program 1 times [2022-11-22 02:12:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635310952] [2022-11-22 02:12:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:12:14,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635310952] [2022-11-22 02:12:14,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635310952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138046374] [2022-11-22 02:12:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:14,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:14,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:14,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:14,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:12:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:12:14,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 02:12:14,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:12:14,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138046374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:14,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:12:14,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-22 02:12:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215261832] [2022-11-22 02:12:14,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:12:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:12:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:12:14,893 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 02:12:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:15,354 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2022-11-22 02:12:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:12:15,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 64 [2022-11-22 02:12:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:15,357 INFO L225 Difference]: With dead ends: 163 [2022-11-22 02:12:15,357 INFO L226 Difference]: Without dead ends: 90 [2022-11-22 02:12:15,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:12:15,369 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 64 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:15,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 427 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:12:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-22 02:12:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-22 02:12:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 51 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2022-11-22 02:12:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 132 transitions. [2022-11-22 02:12:15,392 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 132 transitions. Word has length 64 [2022-11-22 02:12:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:15,393 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 132 transitions. [2022-11-22 02:12:15,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 02:12:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 132 transitions. [2022-11-22 02:12:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:12:15,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:15,395 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:15,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:15,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:15,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2097948773, now seen corresponding path program 1 times [2022-11-22 02:12:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:15,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048768594] [2022-11-22 02:12:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:12:16,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:16,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048768594] [2022-11-22 02:12:16,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048768594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:16,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154256688] [2022-11-22 02:12:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:16,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:16,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:12:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:12:16,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 02:12:16,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:12:16,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154256688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:16,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:12:16,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-22 02:12:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099506603] [2022-11-22 02:12:16,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:16,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:12:16,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:12:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:12:16,828 INFO L87 Difference]: Start difference. First operand 90 states and 132 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 02:12:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:17,541 INFO L93 Difference]: Finished difference Result 178 states and 274 transitions. [2022-11-22 02:12:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:12:17,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 66 [2022-11-22 02:12:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:17,553 INFO L225 Difference]: With dead ends: 178 [2022-11-22 02:12:17,554 INFO L226 Difference]: Without dead ends: 102 [2022-11-22 02:12:17,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:12:17,559 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 94 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:17,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 499 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:12:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-22 02:12:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2022-11-22 02:12:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 53 states have internal predecessors, (59), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2022-11-22 02:12:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2022-11-22 02:12:17,613 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 66 [2022-11-22 02:12:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:17,615 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2022-11-22 02:12:17,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 02:12:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2022-11-22 02:12:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 02:12:17,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:17,621 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:17,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:17,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:17,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash -921720928, now seen corresponding path program 1 times [2022-11-22 02:12:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:17,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980862431] [2022-11-22 02:12:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:12:18,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:18,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980862431] [2022-11-22 02:12:18,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980862431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:18,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690150080] [2022-11-22 02:12:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:18,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:18,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:18,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:18,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:12:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:12:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 02:12:19,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:12:19,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690150080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:19,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:12:19,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-22 02:12:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947213627] [2022-11-22 02:12:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:19,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:12:19,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:12:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:12:19,208 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 02:12:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:19,296 INFO L93 Difference]: Finished difference Result 179 states and 282 transitions. [2022-11-22 02:12:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:12:19,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-11-22 02:12:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:19,303 INFO L225 Difference]: With dead ends: 179 [2022-11-22 02:12:19,304 INFO L226 Difference]: Without dead ends: 101 [2022-11-22 02:12:19,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:12:19,310 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:19,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 220 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:12:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-22 02:12:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2022-11-22 02:12:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 48 states have (on average 1.25) internal successors, (60), 54 states have internal predecessors, (60), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2022-11-22 02:12:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2022-11-22 02:12:19,350 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 67 [2022-11-22 02:12:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:19,351 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2022-11-22 02:12:19,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 02:12:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2022-11-22 02:12:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:12:19,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:19,356 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:19,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:19,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:19,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1389593974, now seen corresponding path program 1 times [2022-11-22 02:12:19,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:19,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122188754] [2022-11-22 02:12:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 02:12:20,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122188754] [2022-11-22 02:12:20,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122188754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:20,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178562052] [2022-11-22 02:12:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:20,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:20,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:20,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:20,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:12:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 02:12:20,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 02:12:20,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:12:20,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178562052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:20,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:12:20,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 10 [2022-11-22 02:12:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412825546] [2022-11-22 02:12:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:20,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:12:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:12:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:12:20,884 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 02:12:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:21,358 INFO L93 Difference]: Finished difference Result 178 states and 269 transitions. [2022-11-22 02:12:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:12:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 70 [2022-11-22 02:12:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:21,361 INFO L225 Difference]: With dead ends: 178 [2022-11-22 02:12:21,361 INFO L226 Difference]: Without dead ends: 99 [2022-11-22 02:12:21,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:12:21,363 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 39 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:21,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 555 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:12:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-22 02:12:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2022-11-22 02:12:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 55 states have internal predecessors, (61), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2022-11-22 02:12:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 137 transitions. [2022-11-22 02:12:21,380 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 137 transitions. Word has length 70 [2022-11-22 02:12:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:21,380 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 137 transitions. [2022-11-22 02:12:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 02:12:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 137 transitions. [2022-11-22 02:12:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 02:12:21,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:21,383 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:21,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:21,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:21,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1370238580, now seen corresponding path program 1 times [2022-11-22 02:12:21,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:21,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908564454] [2022-11-22 02:12:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:21,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:12:24,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908564454] [2022-11-22 02:12:24,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908564454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081781862] [2022-11-22 02:12:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:24,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:24,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:12:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:24,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-22 02:12:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 02:12:28,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:12:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:12:29,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081781862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:12:29,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872554327] [2022-11-22 02:12:29,074 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-22 02:12:29,074 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:12:29,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:12:29,086 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:12:29,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:12:29,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,313 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:12:29,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 85 [2022-11-22 02:12:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 17 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 02:12:29,504 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:12:29,516 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:12:29,535 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:12:29,551 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:12:29,570 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 41 [2022-11-22 02:12:29,587 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:12:29,597 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 43 [2022-11-22 02:12:29,614 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:12:29,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:12:29,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:12:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:12:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:12:29,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:12:29,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:12:29,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:12:29,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:29,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:12:30,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2022-11-22 02:12:30,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2022-11-22 02:12:30,282 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:12:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2022-11-22 02:12:30,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:30,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2022-11-22 02:12:30,524 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:12:30,694 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:12:30,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:12:30,745 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:12:30,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:12:39,490 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 165 for LOIs [2022-11-22 02:12:41,249 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 22 for LOIs [2022-11-22 02:12:41,310 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:12:41,319 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:12:41,334 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:12:41,348 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:12:41,373 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:12:41,387 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 41 [2022-11-22 02:12:41,401 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 43 [2022-11-22 02:12:41,418 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:12:41,436 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2022-11-22 02:12:41,438 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 15 for LOIs [2022-11-22 02:12:41,440 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 02:12:41,507 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:12:50,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1872554327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:50,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:12:50,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [9, 9, 6] total 42 [2022-11-22 02:12:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192318618] [2022-11-22 02:12:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:12:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:12:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1554, Unknown=1, NotChecked=0, Total=1722 [2022-11-22 02:12:50,573 INFO L87 Difference]: Start difference. First operand 94 states and 137 transitions. Second operand has 24 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-22 02:12:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:59,638 INFO L93 Difference]: Finished difference Result 223 states and 321 transitions. [2022-11-22 02:12:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-22 02:12:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 72 [2022-11-22 02:12:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:59,641 INFO L225 Difference]: With dead ends: 223 [2022-11-22 02:12:59,641 INFO L226 Difference]: Without dead ends: 127 [2022-11-22 02:12:59,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 176 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=274, Invalid=2275, Unknown=1, NotChecked=0, Total=2550 [2022-11-22 02:12:59,644 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 180 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:59,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 693 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 02:12:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-22 02:12:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2022-11-22 02:12:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 73 states have internal predecessors, (81), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (49), 37 states have call predecessors, (49), 37 states have call successors, (49) [2022-11-22 02:12:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2022-11-22 02:12:59,685 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 72 [2022-11-22 02:12:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:59,685 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2022-11-22 02:12:59,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-22 02:12:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2022-11-22 02:12:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:12:59,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:59,688 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:59,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:12:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:59,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash -782095385, now seen corresponding path program 1 times [2022-11-22 02:12:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:59,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951899218] [2022-11-22 02:12:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:13:00,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:00,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951899218] [2022-11-22 02:13:00,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951899218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:00,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073766882] [2022-11-22 02:13:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:00,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:00,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:00,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:13:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-22 02:13:01,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:01,922 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-22 02:13:01,928 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 9 [2022-11-22 02:13:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-22 02:13:01,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:02,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:13:02,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 29 [2022-11-22 02:13:02,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:13:02,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 27 [2022-11-22 02:13:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 02:13:02,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073766882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:02,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [919520809] [2022-11-22 02:13:02,515 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-22 02:13:02,515 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:13:02,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:13:02,516 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:13:02,517 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:13:02,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,683 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:13:02,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 85 [2022-11-22 02:13:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 17 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 02:13:02,797 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:13:02,806 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:13:02,814 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:13:02,830 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:13:02,886 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 43 [2022-11-22 02:13:02,903 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:13:02,919 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:13:02,930 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 41 [2022-11-22 02:13:02,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:02,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:13:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:13:03,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:13:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:13:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:13:03,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:13:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:13:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:13:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2022-11-22 02:13:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:03,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2022-11-22 02:13:03,462 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:13:03,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:13:03,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 31 [2022-11-22 02:13:03,668 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:13:03,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 18 [2022-11-22 02:13:03,690 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:13:03,872 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:13:03,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:13:03,922 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:13:03,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:13:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:13:21,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:21,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:13:26,629 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 775 DAG size of output: 1 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:13:26,630 INFO L321 Elim1Store]: treesize reduction 4691, result has 0.0 percent of original size [2022-11-22 02:13:26,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 24 select indices, 24 select index equivalence classes, 12 disjoint index pairs (out of 276 index pairs), introduced 29 new quantified variables, introduced 302 case distinctions, treesize of input 3537 treesize of output 1 [2022-11-22 02:13:33,680 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 200 for LOIs [2022-11-22 02:13:34,918 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 19 for LOIs [2022-11-22 02:13:35,758 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 22 for LOIs [2022-11-22 02:13:35,827 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:13:35,843 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:13:35,858 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:13:35,877 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:13:35,901 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 43 [2022-11-22 02:13:35,920 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:13:35,931 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 41 [2022-11-22 02:13:35,961 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:13:35,975 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 40 for LOIs [2022-11-22 02:13:35,989 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 15 for LOIs [2022-11-22 02:13:35,991 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 02:13:36,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:13:58,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [919520809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:58,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:58,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 12, 9] total 48 [2022-11-22 02:13:58,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585471260] [2022-11-22 02:13:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:58,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 02:13:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 02:13:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-11-22 02:13:58,110 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 32 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 02:14:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:05,777 INFO L93 Difference]: Finished difference Result 236 states and 335 transitions. [2022-11-22 02:14:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 02:14:05,778 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) Word has length 73 [2022-11-22 02:14:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:05,780 INFO L225 Difference]: With dead ends: 236 [2022-11-22 02:14:05,780 INFO L226 Difference]: Without dead ends: 159 [2022-11-22 02:14:05,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 158 SyntacticMatches, 18 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 02:14:05,783 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 169 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:05,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 636 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 02:14:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-22 02:14:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2022-11-22 02:14:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 88 states have internal predecessors, (102), 45 states have call successors, (45), 12 states have call predecessors, (45), 15 states have return successors, (55), 44 states have call predecessors, (55), 43 states have call successors, (55) [2022-11-22 02:14:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 202 transitions. [2022-11-22 02:14:05,833 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 202 transitions. Word has length 73 [2022-11-22 02:14:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:05,834 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 202 transitions. [2022-11-22 02:14:05,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 02:14:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 202 transitions. [2022-11-22 02:14:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:14:05,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:05,836 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:14:05,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:06,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:06,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:06,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1372413686, now seen corresponding path program 1 times [2022-11-22 02:14:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:14:06,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879299589] [2022-11-22 02:14:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:06,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:14:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 02:14:07,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:14:07,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879299589] [2022-11-22 02:14:07,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879299589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:07,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259296331] [2022-11-22 02:14:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:07,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:14:07,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:14:07,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:14:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:08,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-22 02:14:08,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:08,706 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 02:14:08,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-22 02:14:08,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-22 02:14:08,873 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 02:14:08,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-22 02:14:08,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:14:08,960 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-22 02:14:08,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 87 [2022-11-22 02:14:08,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-22 02:14:08,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 30 [2022-11-22 02:14:09,087 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-11-22 02:14:09,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 31 [2022-11-22 02:14:09,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:14:09,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-11-22 02:14:09,186 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 02:14:09,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-22 02:14:09,353 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26|))) (let ((.cse0 (select .cse1 0))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_18) .cse0 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_18) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (= (select v_DerPreprocessor_18 24) (select .cse1 24)) (not (= |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| .cse0)))))) is different from true [2022-11-22 02:14:09,910 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26|))) (let ((.cse0 (select .cse1 0))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_19) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_20) .cse0 v_DerPreprocessor_19) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_20) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (not (= |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| .cse0)) (= (select .cse1 24) (select v_DerPreprocessor_20 24)))))) (exists ((v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| Int)) (let ((.cse3 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 0))) (and (= (select |c_#memory_$Pointer$.base| .cse2) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| v_DerPreprocessor_18) .cse2 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| v_DerPreprocessor_18) .cse2)) (not (= .cse2 |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|)) (= (select .cse3 24) (select v_DerPreprocessor_18 24))))))) is different from true [2022-11-22 02:14:09,946 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26|))) (let ((.cse0 (select .cse1 0))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_19) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_20) .cse0 v_DerPreprocessor_19) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| v_DerPreprocessor_20) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (not (= |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| .cse0)) (= (select .cse1 24) (select v_DerPreprocessor_20 24)))))) (exists ((v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| Int)) (let ((.cse3 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 0))) (and (= (select |c_#memory_$Pointer$.base| .cse2) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| v_DerPreprocessor_18) .cse2 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| v_DerPreprocessor_18) .cse2)) (not (= .cse2 |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|)) (= (select .cse3 24) (select v_DerPreprocessor_18 24)))))) (not (= (mod |c_assume_abort_if_not_#in~cond| 256) 0))) is different from true [2022-11-22 02:14:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:14:09,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:10,072 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 46 [2022-11-22 02:14:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 02:14:10,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259296331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:10,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128884217] [2022-11-22 02:14:10,573 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-22 02:14:10,573 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:14:10,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:14:10,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:14:10,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:14:10,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,725 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:14:10,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 85 [2022-11-22 02:14:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 17 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 02:14:10,825 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:14:10,834 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:14:10,840 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:14:10,847 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:14:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:10,929 INFO L321 Elim1Store]: treesize reduction 64, result has 41.8 percent of original size [2022-11-22 02:14:10,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2022-11-22 02:14:10,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:14:10,985 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:10,986 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 17 [2022-11-22 02:14:11,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:14:11,043 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:11,044 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 17 [2022-11-22 02:14:11,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,118 INFO L321 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-11-22 02:14:11,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 59 [2022-11-22 02:14:11,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:14:11,182 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 02:14:11,182 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 17 [2022-11-22 02:14:11,228 INFO L321 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2022-11-22 02:14:11,228 INFO L350 Elim1Store]: Elim1 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 59 treesize of output 29 [2022-11-22 02:14:11,275 INFO L321 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2022-11-22 02:14:11,276 INFO L350 Elim1Store]: Elim1 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 59 treesize of output 29 [2022-11-22 02:14:11,312 INFO L321 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2022-11-22 02:14:11,312 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 39 [2022-11-22 02:14:11,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:14:11,356 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:11,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 17 [2022-11-22 02:14:11,373 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 02:14:11,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2022-11-22 02:14:11,405 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:11,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 17 [2022-11-22 02:14:11,437 INFO L321 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-11-22 02:14:11,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2022-11-22 02:14:11,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:14:11,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:14:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:11,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:14:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:14:11,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:11,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:11,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:11,742 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:14:11,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:14:11,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 11 [2022-11-22 02:14:12,495 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 106 for LOIs [2022-11-22 02:14:13,430 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 156 for LOIs [2022-11-22 02:14:15,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:14:15,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:15,923 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 17 [2022-11-22 02:14:15,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:15,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:15,946 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 23 [2022-11-22 02:14:15,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:15,971 INFO L350 Elim1Store]: Elim1 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 71 treesize of output 19 [2022-11-22 02:14:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:15,995 INFO L350 Elim1Store]: Elim1 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 71 treesize of output 19 [2022-11-22 02:14:16,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:14:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:16,039 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:14:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:16,049 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-22 02:14:16,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:16,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:16,064 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 19 [2022-11-22 02:14:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:16,085 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-22 02:14:16,616 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2022-11-22 02:14:16,617 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 134 for LOIs [2022-11-22 02:14:16,663 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 02:14:16,723 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:14:24,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2128884217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:14:24,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:14:24,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [9, 17, 8] total 51 [2022-11-22 02:14:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169086543] [2022-11-22 02:14:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:24,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 02:14:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:14:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 02:14:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2086, Unknown=12, NotChecked=282, Total=2550 [2022-11-22 02:14:24,414 INFO L87 Difference]: Start difference. First operand 143 states and 202 transitions. Second operand has 23 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-22 02:14:32,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:32,007 INFO L93 Difference]: Finished difference Result 258 states and 362 transitions. [2022-11-22 02:14:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:14:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 73 [2022-11-22 02:14:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:32,017 INFO L225 Difference]: With dead ends: 258 [2022-11-22 02:14:32,017 INFO L226 Difference]: Without dead ends: 178 [2022-11-22 02:14:32,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 167 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=258, Invalid=2702, Unknown=22, NotChecked=324, Total=3306 [2022-11-22 02:14:32,019 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 108 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:32,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 330 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:14:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-22 02:14:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2022-11-22 02:14:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 100 states have internal predecessors, (119), 46 states have call successors, (46), 13 states have call predecessors, (46), 16 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-22 02:14:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-11-22 02:14:32,086 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 73 [2022-11-22 02:14:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:32,089 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-11-22 02:14:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-22 02:14:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-11-22 02:14:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 02:14:32,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:32,092 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:14:32,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-22 02:14:32,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:32,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:32,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash -714667099, now seen corresponding path program 1 times [2022-11-22 02:14:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:14:32,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097585793] [2022-11-22 02:14:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:32,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:14:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 02:14:32,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:14:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097585793] [2022-11-22 02:14:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097585793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682153481] [2022-11-22 02:14:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:14:32,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:14:32,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a1f1a-3e3f-4f1f-ac0a-8ea272c51a0c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:14:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:33,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 02:14:33,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:14:33,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 02:14:33,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682153481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333882746] [2022-11-22 02:14:33,850 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-22 02:14:33,850 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:14:33,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:14:33,851 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:14:33,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:14:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:33,971 INFO L321 Elim1Store]: treesize reduction 83, result has 33.6 percent of original size [2022-11-22 02:14:33,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 64 [2022-11-22 02:14:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,105 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:14:34,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 85 [2022-11-22 02:14:34,182 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:14:34,193 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:14:34,200 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:14:34,211 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-22 02:14:34,253 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:34,253 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 17 [2022-11-22 02:14:34,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:14:34,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:14:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,338 INFO L321 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-11-22 02:14:34,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 59 [2022-11-22 02:14:34,378 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:34,378 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 17 [2022-11-22 02:14:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,445 INFO L321 Elim1Store]: treesize reduction 64, result has 41.8 percent of original size [2022-11-22 02:14:34,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2022-11-22 02:14:34,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:14:34,538 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 02:14:34,538 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 27 [2022-11-22 02:14:34,585 INFO L321 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2022-11-22 02:14:34,586 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 29 [2022-11-22 02:14:34,626 INFO L321 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2022-11-22 02:14:34,627 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 29 [2022-11-22 02:14:34,666 INFO L321 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2022-11-22 02:14:34,666 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 23 [2022-11-22 02:14:34,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:14:34,710 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:34,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 17 [2022-11-22 02:14:34,734 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-22 02:14:34,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 17 [2022-11-22 02:14:34,749 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 02:14:34,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2022-11-22 02:14:34,792 INFO L321 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-11-22 02:14:34,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2022-11-22 02:14:34,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:14:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:14:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2022-11-22 02:14:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 02:14:34,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:34,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-22 02:14:35,114 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:14:35,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:14:35,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 11 [2022-11-22 02:14:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:14:36,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:14:36,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,077 WARN L233 SmtUtils]: Spent 46.42s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:15:23,078 INFO L321 Elim1Store]: treesize reduction 2284, result has 29.0 percent of original size [2022-11-22 02:15:23,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 20 select indices, 20 select index equivalence classes, 15 disjoint index pairs (out of 190 index pairs), introduced 21 new quantified variables, introduced 178 case distinctions, treesize of input 1940 treesize of output 2171 [2022-11-22 02:15:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:23,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:23,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:18:27,348 WARN L233 SmtUtils]: Spent 3.07m on a formula simplification. DAG size of input: 703 DAG size of output: 381 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:18:27,349 INFO L321 Elim1Store]: treesize reduction 3329, result has 32.2 percent of original size [2022-11-22 02:18:27,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 20 select indices, 20 select index equivalence classes, 16 disjoint index pairs (out of 190 index pairs), introduced 22 new quantified variables, introduced 215 case distinctions, treesize of input 3110 treesize of output 3808 [2022-11-22 02:18:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:18:28,135 INFO L217 Elim1Store]: Index analysis took 251 ms [2022-11-22 02:18:33,103 INFO L321 Elim1Store]: treesize reduction 459, result has 34.4 percent of original size [2022-11-22 02:18:33,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 524 treesize of output 685 [2022-11-22 02:18:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:18:35,604 INFO L321 Elim1Store]: treesize reduction 459, result has 34.4 percent of original size [2022-11-22 02:18:35,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 524 treesize of output 690