./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW --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 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- 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-4e7fbc6 [2022-11-23 15:14:28,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:14:28,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:14:28,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:14:28,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:14:28,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:14:28,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:14:28,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:14:28,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:14:28,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:14:28,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:14:28,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:14:28,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:14:28,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:14:28,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:14:28,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:14:28,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:14:28,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:14:28,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:14:28,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:14:28,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:14:28,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:14:28,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:14:28,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:14:28,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:14:28,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:14:28,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:14:28,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:14:28,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:14:28,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:14:28,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:14:28,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:14:28,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:14:28,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:14:28,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:14:28,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:14:28,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:14:28,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:14:28,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:14:28,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:14:28,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:14:28,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:14:28,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:14:28,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:14:28,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:14:28,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:14:28,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:14:28,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:14:28,366 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:14:28,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:14:28,366 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:14:28,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:14:28,366 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:14:28,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:14:28,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:14:28,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:14:28,367 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:14:28,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:14:28,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:14:28,368 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:14:28,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:14:28,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:14:28,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:14:28,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:14:28,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:14:28,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:14:28,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:14:28,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:14:28,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:14:28,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:14:28,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:14:28,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:28,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:14:28,377 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:14:28,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:14:28,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:14:28,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:14:28,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:14:28,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:14:28,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:14:28,379 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_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2022-11-23 15:14:28,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:14:28,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:14:28,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:14:28,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:14:28,707 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:14:28,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-23 15:14:31,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:14:32,477 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:14:32,478 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-23 15:14:32,525 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/data/75a8065d6/5e7b5353b7d84a5c9e13995f8df7ba2a/FLAG6b40faca1 [2022-11-23 15:14:32,544 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/data/75a8065d6/5e7b5353b7d84a5c9e13995f8df7ba2a [2022-11-23 15:14:32,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:14:32,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:14:32,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:32,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:14:32,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:14:32,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:32" (1/1) ... [2022-11-23 15:14:32,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0c817a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:32, skipping insertion in model container [2022-11-23 15:14:32,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:32" (1/1) ... [2022-11-23 15:14:32,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:14:32,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:14:32,943 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_bfb7e506-5f2c-452c-aaea-5efa590570b4/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-23 15:14:32,951 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_bfb7e506-5f2c-452c-aaea-5efa590570b4/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-23 15:14:33,938 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:14:34,052 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,053 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,053 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,054 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,056 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,073 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,074 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,076 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,077 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,078 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,080 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,681 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:14:34,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:14:34,683 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:14:34,684 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:14:34,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:14:34,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:14:34,707 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:14:34,708 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:14:34,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:14:34,710 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:14:34,874 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,874 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,880 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,890 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:34,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:35,010 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:14:35,043 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_bfb7e506-5f2c-452c-aaea-5efa590570b4/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-23 15:14:35,044 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_bfb7e506-5f2c-452c-aaea-5efa590570b4/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-23 15:14:35,117 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:14:35,139 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,141 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,142 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,150 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,152 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,153 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,154 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,155 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,156 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,156 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:14:35,198 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:14:35,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:14:35,200 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:14:35,201 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:14:35,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:14:35,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:14:35,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:14:35,204 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:14:35,204 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:14:35,235 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,235 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,236 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,242 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:14:35,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:35,514 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:14:35,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35 WrapperNode [2022-11-23 15:14:35,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:35,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:35,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:14:35,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:14:35,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,707 INFO L138 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 648 [2022-11-23 15:14:35,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:35,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:14:35,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:14:35,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:14:35,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:14:35,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:14:35,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:14:35,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:14:35,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (1/1) ... [2022-11-23 15:14:35,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:35,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:14:35,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:14:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:14:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-23 15:14:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-23 15:14:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-23 15:14:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-23 15:14:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 15:14:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 15:14:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:14:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-23 15:14:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-23 15:14:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:14:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:14:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:14:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:14:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:14:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-23 15:14:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-23 15:14:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:14:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:14:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 15:14:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 15:14:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-23 15:14:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-23 15:14:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-23 15:14:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-23 15:14:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:14:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:14:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-23 15:14:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-23 15:14:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:14:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:14:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:14:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-23 15:14:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-23 15:14:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 15:14:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 15:14:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-23 15:14:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-23 15:14:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:14:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-23 15:14:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-23 15:14:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:14:36,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:14:36,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:14:37,433 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:14:37,637 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:14:37,637 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:14:37,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:37 BoogieIcfgContainer [2022-11-23 15:14:37,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:14:37,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:14:37,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:14:37,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:14:37,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:14:32" (1/3) ... [2022-11-23 15:14:37,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598d7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:37, skipping insertion in model container [2022-11-23 15:14:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:35" (2/3) ... [2022-11-23 15:14:37,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598d7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:37, skipping insertion in model container [2022-11-23 15:14:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:37" (3/3) ... [2022-11-23 15:14:37,662 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2022-11-23 15:14:37,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:14:37,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:14:37,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:14:37,788 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;@4f2dfd60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:14:37,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:14:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:14:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 15:14:37,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:37,814 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:37,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -333435140, now seen corresponding path program 1 times [2022-11-23 15:14:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:37,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683838711] [2022-11-23 15:14:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:37,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:14:38,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:38,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683838711] [2022-11-23 15:14:38,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683838711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:38,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823698707] [2022-11-23 15:14:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:38,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:38,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:14:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:39,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:14:39,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:14:39,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:39,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823698707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:39,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:39,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 15:14:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952842664] [2022-11-23 15:14:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:14:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:14:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:14:39,716 INFO L87 Difference]: Start difference. First operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:14:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:40,219 INFO L93 Difference]: Finished difference Result 273 states and 398 transitions. [2022-11-23 15:14:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:14:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2022-11-23 15:14:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:40,237 INFO L225 Difference]: With dead ends: 273 [2022-11-23 15:14:40,237 INFO L226 Difference]: Without dead ends: 151 [2022-11-23 15:14:40,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:14:40,254 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 31 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:40,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 582 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:14:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-23 15:14:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-23 15:14:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 75 states have internal predecessors, (82), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-11-23 15:14:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 211 transitions. [2022-11-23 15:14:40,334 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 211 transitions. Word has length 54 [2022-11-23 15:14:40,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:40,334 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 211 transitions. [2022-11-23 15:14:40,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:14:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 211 transitions. [2022-11-23 15:14:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 15:14:40,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:40,338 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:40,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:14:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 15:14:40,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 211094557, now seen corresponding path program 1 times [2022-11-23 15:14:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250826217] [2022-11-23 15:14:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:40,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:14:40,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621316186] [2022-11-23 15:14:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:40,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:40,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:40,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:40,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:14:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:41,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:14:41,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:14:41,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:41,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:41,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250826217] [2022-11-23 15:14:41,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:14:41,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621316186] [2022-11-23 15:14:41,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621316186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:41,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:41,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:14:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874179678] [2022-11-23 15:14:41,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:41,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:14:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:41,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:14:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:41,293 INFO L87 Difference]: Start difference. First operand 151 states and 211 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 15:14:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:42,135 INFO L93 Difference]: Finished difference Result 278 states and 397 transitions. [2022-11-23 15:14:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:14:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 63 [2022-11-23 15:14:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:42,139 INFO L225 Difference]: With dead ends: 278 [2022-11-23 15:14:42,141 INFO L226 Difference]: Without dead ends: 161 [2022-11-23 15:14:42,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:14:42,144 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 36 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:42,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 889 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:14:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-23 15:14:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-23 15:14:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-11-23 15:14:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2022-11-23 15:14:42,171 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 63 [2022-11-23 15:14:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:42,172 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2022-11-23 15:14:42,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 15:14:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2022-11-23 15:14:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:14:42,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:42,174 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:42,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 15:14:42,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:42,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1014181917, now seen corresponding path program 1 times [2022-11-23 15:14:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:42,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910118543] [2022-11-23 15:14:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:42,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:42,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:14:42,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83751150] [2022-11-23 15:14:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:42,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:42,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:42,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:42,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb7e506-5f2c-452c-aaea-5efa590570b4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:14:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:43,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 292 conjunts are in the unsatisfiable core [2022-11-23 15:14:43,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:43,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 15:14:44,346 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 15:14:44,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 15:17:32,795 WARN L233 SmtUtils]: Spent 2.78m on a formula simplification. DAG size of input: 109 DAG size of output: 62 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:17:32,796 INFO L321 Elim1Store]: treesize reduction 202, result has 38.6 percent of original size [2022-11-23 15:17:32,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 196 treesize of output 337 [2022-11-23 15:17:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:17:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:17:32,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:17:32,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 216 [2022-11-23 15:17:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:17:32,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 153