./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- 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-e04fb08 [2022-11-16 11:58:32,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:58:32,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:58:32,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:58:32,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:58:32,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:58:32,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:58:32,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:58:32,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:58:32,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:58:32,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:58:32,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:58:32,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:58:32,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:58:32,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:58:32,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:58:32,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:58:32,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:58:32,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:58:32,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:58:32,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:58:33,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:58:33,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:58:33,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:58:33,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:58:33,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:58:33,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:58:33,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:58:33,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:58:33,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:58:33,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:58:33,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:58:33,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:58:33,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:58:33,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:58:33,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:58:33,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:58:33,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:58:33,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:58:33,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:58:33,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:58:33,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:58:33,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:58:33,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:58:33,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:58:33,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:58:33,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:58:33,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:58:33,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:58:33,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:58:33,065 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:58:33,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:58:33,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:58:33,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:58:33,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:58:33,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:58:33,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:58:33,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:58:33,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:58:33,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:58:33,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:58:33,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:58:33,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:58:33,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:58:33,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:58:33,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:58:33,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:58:33,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:58:33,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:58:33,078 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:58:33,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:58:33,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:58:33,079 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_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-16 11:58:33,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:58:33,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:58:33,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:58:33,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:58:33,402 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:58:33,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-16 11:58:33,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/adf6ccde0/bdcd3abf2fc9423889181bf73c6e2797/FLAG7c1ea1bf1 [2022-11-16 11:58:34,199 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:58:34,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-16 11:58:34,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/adf6ccde0/bdcd3abf2fc9423889181bf73c6e2797/FLAG7c1ea1bf1 [2022-11-16 11:58:34,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/adf6ccde0/bdcd3abf2fc9423889181bf73c6e2797 [2022-11-16 11:58:34,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:58:34,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:58:34,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:58:34,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:58:34,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:58:34,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:58:34" (1/1) ... [2022-11-16 11:58:34,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c20280e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:34, skipping insertion in model container [2022-11-16 11:58:34,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:58:34" (1/1) ... [2022-11-16 11:58:34,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:58:34,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:58:34,727 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-16 11:58:34,733 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-16 11:58:35,462 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:58:35,530 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,531 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,532 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,532 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,533 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,547 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,549 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,551 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,553 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,557 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,560 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,561 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,568 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:35,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:58:35,909 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:58:35,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:58:35,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:58:35,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:58:35,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:58:35,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:58:35,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:58:35,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:58:35,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:58:36,059 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,066 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,124 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,130 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,132 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:58:36,170 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:58:36,197 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-16 11:58:36,206 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-16 11:58:36,252 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:58:36,269 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,269 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,269 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,270 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,271 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,277 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,278 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,279 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,279 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,280 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,281 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,281 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,282 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:58:36,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:58:36,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:58:36,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:58:36,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:58:36,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:58:36,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:58:36,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:58:36,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:58:36,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:58:36,378 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,382 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,427 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,427 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,427 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:58:36,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:58:36,705 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:58:36,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36 WrapperNode [2022-11-16 11:58:36,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:58:36,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:58:36,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:58:36,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:58:36,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,865 INFO L138 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 847 [2022-11-16 11:58:36,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:58:36,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:58:36,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:58:36,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:58:36,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:58:36,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:58:36,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:58:36,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:58:36,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (1/1) ... [2022-11-16 11:58:36,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:58:36,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:36,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:58:37,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:58:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:58:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 11:58:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 11:58:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 11:58:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 11:58:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:58:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:58:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-16 11:58:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-16 11:58:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:58:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 11:58:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 11:58:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:58:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:58:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:58:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:58:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:58:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 11:58:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 11:58:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:58:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:58:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:58:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:58:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 11:58:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 11:58:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 11:58:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 11:58:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 11:58:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 11:58:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-16 11:58:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-16 11:58:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 11:58:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 11:58:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:58:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:58:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 11:58:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 11:58:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-16 11:58:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-16 11:58:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:58:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-16 11:58:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-16 11:58:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:58:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:58:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:58:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:58:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 11:58:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 11:58:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-16 11:58:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-16 11:58:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:58:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:58:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:58:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-16 11:58:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-16 11:58:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:58:37,520 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:58:37,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:58:38,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:58:38,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:58:38,723 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:58:38,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:38 BoogieIcfgContainer [2022-11-16 11:58:38,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:58:38,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:58:38,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:58:38,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:58:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:58:34" (1/3) ... [2022-11-16 11:58:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fad4898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:38, skipping insertion in model container [2022-11-16 11:58:38,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:36" (2/3) ... [2022-11-16 11:58:38,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fad4898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:38, skipping insertion in model container [2022-11-16 11:58:38,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:38" (3/3) ... [2022-11-16 11:58:38,745 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-16 11:58:38,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:58:38,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:58:38,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:38,867 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=PETRI_NET, 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;@711c648f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:38,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:58:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-16 11:58:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 11:58:38,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:38,908 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 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, 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] [2022-11-16 11:58:38,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1870768140, now seen corresponding path program 1 times [2022-11-16 11:58:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713793141] [2022-11-16 11:58:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:58:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:58:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:58:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:58:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:58:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:58:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:58:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:58:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:58:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:58:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:58:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:58:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:58:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:58:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 11:58:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:58:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:58:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:58:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:58:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:58:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 11:58:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 11:58:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-16 11:58:40,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713793141] [2022-11-16 11:58:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713793141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:40,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651557387] [2022-11-16 11:58:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:40,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:40,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:40,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:40,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:58:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:41,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:58:41,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-16 11:58:41,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:41,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651557387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:41,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:58:41,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 11:58:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354291140] [2022-11-16 11:58:41,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:41,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:41,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:58:41,415 INFO L87 Difference]: Start difference. First operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 11:58:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:41,854 INFO L93 Difference]: Finished difference Result 557 states and 840 transitions. [2022-11-16 11:58:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:58:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 146 [2022-11-16 11:58:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:41,868 INFO L225 Difference]: With dead ends: 557 [2022-11-16 11:58:41,869 INFO L226 Difference]: Without dead ends: 278 [2022-11-16 11:58:41,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:58:41,878 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 386 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:41,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1217 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:58:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-16 11:58:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-16 11:58:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 163 states have internal predecessors, (195), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-16 11:58:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 396 transitions. [2022-11-16 11:58:41,977 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 396 transitions. Word has length 146 [2022-11-16 11:58:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:41,978 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 396 transitions. [2022-11-16 11:58:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 11:58:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 396 transitions. [2022-11-16 11:58:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-16 11:58:41,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:41,991 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2022-11-16 11:58:42,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:42,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:58:42,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:42,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:42,199 INFO L85 PathProgramCache]: Analyzing trace with hash 265363754, now seen corresponding path program 1 times [2022-11-16 11:58:42,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:42,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296729646] [2022-11-16 11:58:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:42,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76224275] [2022-11-16 11:58:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:42,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:58:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:42,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:58:43,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-16 11:58:43,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:43,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:43,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296729646] [2022-11-16 11:58:43,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:43,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76224275] [2022-11-16 11:58:43,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76224275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:43,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:43,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:58:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469504827] [2022-11-16 11:58:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:43,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:43,048 INFO L87 Difference]: Start difference. First operand 278 states and 396 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:58:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:43,112 INFO L93 Difference]: Finished difference Result 535 states and 784 transitions. [2022-11-16 11:58:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:43,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 176 [2022-11-16 11:58:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:43,117 INFO L225 Difference]: With dead ends: 535 [2022-11-16 11:58:43,117 INFO L226 Difference]: Without dead ends: 283 [2022-11-16 11:58:43,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:58:43,120 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:43,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1124 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:58:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-16 11:58:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2022-11-16 11:58:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-16 11:58:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 398 transitions. [2022-11-16 11:58:43,147 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 398 transitions. Word has length 176 [2022-11-16 11:58:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:43,147 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 398 transitions. [2022-11-16 11:58:43,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:58:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 398 transitions. [2022-11-16 11:58:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-16 11:58:43,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:43,151 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2022-11-16 11:58:43,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:43,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:43,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:43,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1664860694, now seen corresponding path program 1 times [2022-11-16 11:58:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:43,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837517862] [2022-11-16 11:58:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:43,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:43,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230759755] [2022-11-16 11:58:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:43,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:43,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:43,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:58:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:44,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:58:44,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-16 11:58:44,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:44,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:44,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837517862] [2022-11-16 11:58:44,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:44,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230759755] [2022-11-16 11:58:44,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230759755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:44,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:44,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:44,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254535368] [2022-11-16 11:58:44,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:44,313 INFO L87 Difference]: Start difference. First operand 280 states and 398 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:58:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:45,018 INFO L93 Difference]: Finished difference Result 512 states and 726 transitions. [2022-11-16 11:58:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:58:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 176 [2022-11-16 11:58:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:45,021 INFO L225 Difference]: With dead ends: 512 [2022-11-16 11:58:45,021 INFO L226 Difference]: Without dead ends: 280 [2022-11-16 11:58:45,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:58:45,023 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 444 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:45,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1529 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:58:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-16 11:58:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-16 11:58:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2022-11-16 11:58:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 394 transitions. [2022-11-16 11:58:45,065 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 394 transitions. Word has length 176 [2022-11-16 11:58:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:45,068 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 394 transitions. [2022-11-16 11:58:45,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:58:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 394 transitions. [2022-11-16 11:58:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 11:58:45,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:45,071 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1] [2022-11-16 11:58:45,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:58:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:45,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -331838195, now seen corresponding path program 2 times [2022-11-16 11:58:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462603193] [2022-11-16 11:58:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:45,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:45,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870063014] [2022-11-16 11:58:45,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:58:45,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:45,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:45,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:45,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:58:45,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:58:45,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:58:45,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:58:45,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 11:58:46,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:46,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462603193] [2022-11-16 11:58:46,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:46,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870063014] [2022-11-16 11:58:46,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870063014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:46,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:46,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:58:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23405568] [2022-11-16 11:58:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:58:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:58:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:58:46,033 INFO L87 Difference]: Start difference. First operand 280 states and 394 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:58:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:46,095 INFO L93 Difference]: Finished difference Result 494 states and 684 transitions. [2022-11-16 11:58:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:46,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2022-11-16 11:58:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:46,099 INFO L225 Difference]: With dead ends: 494 [2022-11-16 11:58:46,099 INFO L226 Difference]: Without dead ends: 285 [2022-11-16 11:58:46,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:58:46,101 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:46,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1497 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:58:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-16 11:58:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-16 11:58:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2022-11-16 11:58:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 400 transitions. [2022-11-16 11:58:46,123 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 400 transitions. Word has length 191 [2022-11-16 11:58:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:46,124 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 400 transitions. [2022-11-16 11:58:46,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:58:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 400 transitions. [2022-11-16 11:58:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-16 11:58:46,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:46,128 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:46,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:46,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:46,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1595114899, now seen corresponding path program 1 times [2022-11-16 11:58:46,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:46,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667109502] [2022-11-16 11:58:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:46,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:46,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656032132] [2022-11-16 11:58:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:46,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:46,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:46,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:46,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:58:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:58:47,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-16 11:58:47,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667109502] [2022-11-16 11:58:47,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656032132] [2022-11-16 11:58:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656032132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:47,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:47,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:58:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82518778] [2022-11-16 11:58:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:58:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:58:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:58:47,291 INFO L87 Difference]: Start difference. First operand 285 states and 400 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-16 11:58:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:48,057 INFO L93 Difference]: Finished difference Result 516 states and 720 transitions. [2022-11-16 11:58:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 197 [2022-11-16 11:58:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:48,060 INFO L225 Difference]: With dead ends: 516 [2022-11-16 11:58:48,061 INFO L226 Difference]: Without dead ends: 285 [2022-11-16 11:58:48,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:58:48,062 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 494 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:48,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1700 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:58:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-16 11:58:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-16 11:58:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2022-11-16 11:58:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 394 transitions. [2022-11-16 11:58:48,082 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 394 transitions. Word has length 197 [2022-11-16 11:58:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:48,082 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 394 transitions. [2022-11-16 11:58:48,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-16 11:58:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 394 transitions. [2022-11-16 11:58:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-16 11:58:48,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:48,086 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1] [2022-11-16 11:58:48,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:48,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:48,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash -895724094, now seen corresponding path program 2 times [2022-11-16 11:58:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:48,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750339820] [2022-11-16 11:58:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:48,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:48,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994585724] [2022-11-16 11:58:48,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:58:48,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:48,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:48,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:58:49,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:58:49,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:58:49,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 183 conjunts are in the unsatisfiable core [2022-11-16 11:58:49,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:50,863 INFO L217 Elim1Store]: Index analysis took 107 ms [2022-11-16 11:58:52,131 INFO L321 Elim1Store]: treesize reduction 340, result has 50.1 percent of original size [2022-11-16 11:58:52,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 86 select indices, 86 select index equivalence classes, 3570 disjoint index pairs (out of 3655 index pairs), introduced 86 new quantified variables, introduced 85 case distinctions, treesize of input 431 treesize of output 599 [2022-11-16 11:59:07,186 WARN L718 sPolynomialRelations]: Constructing 2147483647(two to the power of 85 dual juncts. [2022-11-16 11:59:07,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:07,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750339820] [2022-11-16 11:59:07,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:07,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994585724] [2022-11-16 11:59:07,187 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:59:07,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:07,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:07,402 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Requested array size exceeds VM limit at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) [2022-11-16 11:59:07,406 INFO L158 Benchmark]: Toolchain (without parser) took 33091.20ms. Allocated memory was 140.5MB in the beginning and 578.8MB in the end (delta: 438.3MB). Free memory was 96.6MB in the beginning and 499.5MB in the end (delta: -403.0MB). Peak memory consumption was 358.2MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,406 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory was 120.5MB in the beginning and 120.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:59:07,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2385.37ms. Allocated memory was 140.5MB in the beginning and 186.6MB in the end (delta: 46.1MB). Free memory was 96.3MB in the beginning and 120.3MB in the end (delta: -24.0MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.85ms. Allocated memory is still 186.6MB. Free memory was 120.3MB in the beginning and 111.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,408 INFO L158 Benchmark]: Boogie Preprocessor took 76.72ms. Allocated memory is still 186.6MB. Free memory was 111.0MB in the beginning and 103.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,408 INFO L158 Benchmark]: RCFGBuilder took 1782.06ms. Allocated memory is still 186.6MB. Free memory was 103.6MB in the beginning and 111.3MB in the end (delta: -7.7MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,408 INFO L158 Benchmark]: TraceAbstraction took 28676.51ms. Allocated memory was 186.6MB in the beginning and 578.8MB in the end (delta: 392.2MB). Free memory was 111.3MB in the beginning and 499.5MB in the end (delta: -388.2MB). Peak memory consumption was 327.4MB. Max. memory is 16.1GB. [2022-11-16 11:59:07,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory was 120.5MB in the beginning and 120.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2385.37ms. Allocated memory was 140.5MB in the beginning and 186.6MB in the end (delta: 46.1MB). Free memory was 96.3MB in the beginning and 120.3MB in the end (delta: -24.0MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.85ms. Allocated memory is still 186.6MB. Free memory was 120.3MB in the beginning and 111.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.72ms. Allocated memory is still 186.6MB. Free memory was 111.0MB in the beginning and 103.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1782.06ms. Allocated memory is still 186.6MB. Free memory was 103.6MB in the beginning and 111.3MB in the end (delta: -7.7MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * TraceAbstraction took 28676.51ms. Allocated memory was 186.6MB in the beginning and 578.8MB in the end (delta: 392.2MB). Free memory was 111.3MB in the beginning and 499.5MB in the end (delta: -388.2MB). Peak memory consumption was 327.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Requested array size exceeds VM limit de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Requested array size exceeds VM limit: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 11:59:07,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- 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-e04fb08 [2022-11-16 11:59:09,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:59:09,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:59:09,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:59:09,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:59:09,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:59:09,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:59:09,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:59:09,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:59:09,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:59:09,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:59:09,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:59:09,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:59:09,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:59:09,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:59:09,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:59:09,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:59:09,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:59:09,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:59:09,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:59:09,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:59:09,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:59:09,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:59:09,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:59:09,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:59:09,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:59:09,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:59:09,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:59:09,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:59:09,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:59:09,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:59:09,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:59:09,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:59:09,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:59:09,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:59:09,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:59:09,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:59:09,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:59:09,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:59:09,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:59:09,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:59:09,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:59:09,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:59:09,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:59:09,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:59:09,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:59:09,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:59:09,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:59:09,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:59:09,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:59:09,691 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:59:09,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:59:09,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:59:09,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:59:09,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:59:09,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:59:09,693 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:59:09,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:59:09,694 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:59:09,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:59:09,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:59:09,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:59:09,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:59:09,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:59:09,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:59:09,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:59:09,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:59:09,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:59:09,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:59:09,696 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:59:09,696 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:59:09,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:59:09,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:59:09,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:59:09,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:59:09,698 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-16 11:59:10,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:59:10,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:59:10,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:59:10,092 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:59:10,093 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:59:10,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-16 11:59:10,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/f5c051f36/37bf4d056d9c4fe596bac4b002a1282d/FLAGeb1e9bd6f [2022-11-16 11:59:11,049 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:59:11,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-16 11:59:11,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/f5c051f36/37bf4d056d9c4fe596bac4b002a1282d/FLAGeb1e9bd6f [2022-11-16 11:59:11,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/data/f5c051f36/37bf4d056d9c4fe596bac4b002a1282d [2022-11-16 11:59:11,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:59:11,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:59:11,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:59:11,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:59:11,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:59:11,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:59:11" (1/1) ... [2022-11-16 11:59:11,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558ef8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:11, skipping insertion in model container [2022-11-16 11:59:11,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:59:11" (1/1) ... [2022-11-16 11:59:11,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:59:11,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:59:12,012 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-16 11:59:12,018 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-16 11:59:13,122 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:59:13,233 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,237 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,238 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,240 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,242 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,266 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,270 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,272 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,273 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,275 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,276 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,276 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,277 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:59:13,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:59:13,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:59:13,680 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:59:13,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:59:13,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:59:13,687 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:59:13,688 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:59:13,689 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:59:13,690 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:59:13,842 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,849 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,906 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,906 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,907 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:13,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:59:13,953 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:59:14,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:59:14,028 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-16 11:59:14,029 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-16 11:59:14,074 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:59:14,108 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,109 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,112 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,113 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,113 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,121 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,128 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,130 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,131 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,135 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,139 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,141 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,142 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,198 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:59:14,200 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:59:14,201 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:59:14,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:59:14,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:59:14,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:59:14,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:59:14,208 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:59:14,208 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:59:14,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:59:14,270 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,278 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,307 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,307 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,308 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:59:14,321 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:59:14,333 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-16 11:59:14,334 WARN L229 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_daceb85c-9507-4175-ae30-4eaf2513b500/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-16 11:59:14,401 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:59:14,417 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,417 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,418 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,418 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,419 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,433 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,434 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,435 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,435 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,436 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,436 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,437 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,437 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,471 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:59:14,472 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:59:14,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:59:14,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:59:14,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:59:14,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:59:14,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:59:14,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:59:14,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:59:14,477 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:59:14,520 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,524 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,555 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,556 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,557 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:59:14,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:59:14,896 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:59:14,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14 WrapperNode [2022-11-16 11:59:14,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:59:14,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:59:14,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:59:14,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:59:14,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,131 INFO L138 Inliner]: procedures = 711, calls = 1681, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 836 [2022-11-16 11:59:15,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:59:15,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:59:15,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:59:15,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:59:15,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:59:15,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:59:15,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:59:15,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:59:15,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (1/1) ... [2022-11-16 11:59:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:59:15,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:15,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:59:15,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:59:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:59:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 11:59:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 11:59:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 11:59:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 11:59:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:59:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:59:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:59:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-16 11:59:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-16 11:59:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-16 11:59:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-16 11:59:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 11:59:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 11:59:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:59:15,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:59:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:59:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:59:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:59:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 11:59:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 11:59:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:59:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:59:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:59:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:59:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 11:59:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 11:59:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 11:59:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-16 11:59:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 11:59:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 11:59:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 11:59:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 11:59:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-16 11:59:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-16 11:59:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 11:59:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 11:59:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:59:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:59:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 11:59:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 11:59:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-16 11:59:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-16 11:59:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:59:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-16 11:59:15,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-16 11:59:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:59:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-16 11:59:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-16 11:59:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:59:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:59:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:59:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 11:59:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 11:59:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-16 11:59:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-16 11:59:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:59:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:59:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-16 11:59:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-16 11:59:15,741 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:59:15,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:59:18,066 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:59:18,074 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:59:18,075 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:59:18,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:59:18 BoogieIcfgContainer [2022-11-16 11:59:18,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:59:18,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:59:18,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:59:18,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:59:18,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:59:11" (1/3) ... [2022-11-16 11:59:18,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41545b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:59:18, skipping insertion in model container [2022-11-16 11:59:18,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:14" (2/3) ... [2022-11-16 11:59:18,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41545b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:59:18, skipping insertion in model container [2022-11-16 11:59:18,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:59:18" (3/3) ... [2022-11-16 11:59:18,085 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-16 11:59:18,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:59:18,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:59:18,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:59:18,162 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=PETRI_NET, 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;@5fa02326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:59:18,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:59:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 277 states, 160 states have (on average 1.225) internal successors, (196), 161 states have internal predecessors, (196), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-16 11:59:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 11:59:18,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:18,182 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 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, 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] [2022-11-16 11:59:18,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1997174073, now seen corresponding path program 1 times [2022-11-16 11:59:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:18,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862799417] [2022-11-16 11:59:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:18,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:18,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:18,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:59:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:19,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:59:19,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-16 11:59:19,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:59:19,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:59:19,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862799417] [2022-11-16 11:59:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862799417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:19,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:19,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:59:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18678388] [2022-11-16 11:59:19,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:59:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:59:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:59:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:59:19,422 INFO L87 Difference]: Start difference. First operand has 277 states, 160 states have (on average 1.225) internal successors, (196), 161 states have internal predecessors, (196), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 11:59:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:19,530 INFO L93 Difference]: Finished difference Result 547 states and 812 transitions. [2022-11-16 11:59:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:59:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 145 [2022-11-16 11:59:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:19,550 INFO L225 Difference]: With dead ends: 547 [2022-11-16 11:59:19,551 INFO L226 Difference]: Without dead ends: 272 [2022-11-16 11:59:19,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:59:19,566 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:59:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-16 11:59:19,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-16 11:59:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 156 states have (on average 1.2179487179487178) internal successors, (190), 157 states have internal predecessors, (190), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-16 11:59:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 375 transitions. [2022-11-16 11:59:19,661 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 375 transitions. Word has length 145 [2022-11-16 11:59:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:19,662 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 375 transitions. [2022-11-16 11:59:19,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 11:59:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 375 transitions. [2022-11-16 11:59:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 11:59:19,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:19,679 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 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, 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] [2022-11-16 11:59:19,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:19,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:19,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1087446781, now seen corresponding path program 1 times [2022-11-16 11:59:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992382680] [2022-11-16 11:59:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:19,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:19,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:59:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:20,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:59:20,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-16 11:59:21,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:59:21,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:59:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992382680] [2022-11-16 11:59:21,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992382680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:21,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:21,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:21,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030213722] [2022-11-16 11:59:21,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:21,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:59:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:59:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:59:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:21,029 INFO L87 Difference]: Start difference. First operand 272 states and 375 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 11:59:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:21,662 INFO L93 Difference]: Finished difference Result 520 states and 734 transitions. [2022-11-16 11:59:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 145 [2022-11-16 11:59:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:21,670 INFO L225 Difference]: With dead ends: 520 [2022-11-16 11:59:21,670 INFO L226 Difference]: Without dead ends: 274 [2022-11-16 11:59:21,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:59:21,672 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 43 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:21,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1269 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:59:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-16 11:59:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-16 11:59:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 157 states have (on average 1.21656050955414) internal successors, (191), 159 states have internal predecessors, (191), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-16 11:59:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 392 transitions. [2022-11-16 11:59:21,719 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 392 transitions. Word has length 145 [2022-11-16 11:59:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 392 transitions. [2022-11-16 11:59:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 11:59:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 392 transitions. [2022-11-16 11:59:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 11:59:21,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:21,725 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2022-11-16 11:59:21,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:21,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 816259463, now seen corresponding path program 1 times [2022-11-16 11:59:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:21,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478445827] [2022-11-16 11:59:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:21,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:21,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:21,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:21,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:59:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:23,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:59:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-16 11:59:23,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:59:23,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:59:23,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478445827] [2022-11-16 11:59:23,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478445827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:23,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:23,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:59:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110136134] [2022-11-16 11:59:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:23,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:23,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:59:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:23,203 INFO L87 Difference]: Start difference. First operand 274 states and 392 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:59:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:23,316 INFO L93 Difference]: Finished difference Result 527 states and 776 transitions. [2022-11-16 11:59:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 175 [2022-11-16 11:59:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:23,321 INFO L225 Difference]: With dead ends: 527 [2022-11-16 11:59:23,321 INFO L226 Difference]: Without dead ends: 279 [2022-11-16 11:59:23,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:23,324 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 10 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1112 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:59:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-16 11:59:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2022-11-16 11:59:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 159 states have (on average 1.2138364779874213) internal successors, (193), 161 states have internal predecessors, (193), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-16 11:59:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 394 transitions. [2022-11-16 11:59:23,344 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 394 transitions. Word has length 175 [2022-11-16 11:59:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:23,345 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 394 transitions. [2022-11-16 11:59:23,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:59:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 394 transitions. [2022-11-16 11:59:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 11:59:23,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:23,348 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2022-11-16 11:59:23,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:23,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:23,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1585278151, now seen corresponding path program 1 times [2022-11-16 11:59:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365315514] [2022-11-16 11:59:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:23,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:23,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:23,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:59:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:24,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:59:24,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:25,664 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 [2022-11-16 11:59:25,671 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 [2022-11-16 11:59:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 11:59:25,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:28,366 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:59:28,367 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 30 treesize of output 25 [2022-11-16 11:59:28,392 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-16 11:59:28,392 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 12 [2022-11-16 11:59:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-16 11:59:28,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:59:28,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365315514] [2022-11-16 11:59:28,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365315514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:28,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:28,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 16 [2022-11-16 11:59:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836041237] [2022-11-16 11:59:28,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:28,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:59:28,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:59:28,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:59:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:59:28,479 INFO L87 Difference]: Start difference. First operand 276 states and 394 transitions. Second operand has 16 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 7 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (50), 6 states have call predecessors, (50), 7 states have call successors, (50) [2022-11-16 11:59:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:34,572 INFO L93 Difference]: Finished difference Result 543 states and 791 transitions. [2022-11-16 11:59:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:59:34,574 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 7 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (50), 6 states have call predecessors, (50), 7 states have call successors, (50) Word has length 175 [2022-11-16 11:59:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:34,576 INFO L225 Difference]: With dead ends: 543 [2022-11-16 11:59:34,577 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 11:59:34,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:59:34,579 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 72 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:34,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 3430 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1170 Invalid, 0 Unknown, 105 Unchecked, 5.0s Time] [2022-11-16 11:59:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 11:59:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 279. [2022-11-16 11:59:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 164 states have internal predecessors, (195), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (126), 92 states have call predecessors, (126), 92 states have call successors, (126) [2022-11-16 11:59:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 414 transitions. [2022-11-16 11:59:34,605 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 414 transitions. Word has length 175 [2022-11-16 11:59:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:34,606 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 414 transitions. [2022-11-16 11:59:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 7 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (50), 6 states have call predecessors, (50), 7 states have call successors, (50) [2022-11-16 11:59:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 414 transitions. [2022-11-16 11:59:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:59:34,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:34,609 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:34,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:34,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:34,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1860018369, now seen corresponding path program 1 times [2022-11-16 11:59:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880534171] [2022-11-16 11:59:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:34,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:34,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:34,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:34,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:59:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:36,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:59:36,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-16 11:59:36,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:59:36,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:59:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880534171] [2022-11-16 11:59:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880534171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:36,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:36,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791250019] [2022-11-16 11:59:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:59:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:59:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:59:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:36,386 INFO L87 Difference]: Start difference. First operand 279 states and 414 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:59:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:39,779 INFO L93 Difference]: Finished difference Result 537 states and 837 transitions. [2022-11-16 11:59:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:59:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 177 [2022-11-16 11:59:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:39,784 INFO L225 Difference]: With dead ends: 537 [2022-11-16 11:59:39,785 INFO L226 Difference]: Without dead ends: 284 [2022-11-16 11:59:39,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:59:39,786 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 10 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:39,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1437 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:59:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-16 11:59:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-11-16 11:59:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 162 states have (on average 1.2098765432098766) internal successors, (196), 165 states have internal predecessors, (196), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (126), 92 states have call predecessors, (126), 92 states have call successors, (126) [2022-11-16 11:59:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 415 transitions. [2022-11-16 11:59:39,810 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 415 transitions. Word has length 177 [2022-11-16 11:59:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:39,810 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 415 transitions. [2022-11-16 11:59:39,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:59:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 415 transitions. [2022-11-16 11:59:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:59:39,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:39,813 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:39,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:40,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:40,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1890076353, now seen corresponding path program 1 times [2022-11-16 11:59:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:59:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996898159] [2022-11-16 11:59:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:40,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:59:40,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:59:40,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:59:40,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daceb85c-9507-4175-ae30-4eaf2513b500/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:59:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:41,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:59:41,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:44,873 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 25 treesize of output 17 [2022-11-16 11:59:44,883 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 21 treesize of output 13 [2022-11-16 11:59:44,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:59:44,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 36 [2022-11-16 11:59:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 187 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 11:59:45,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:49,336 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 9 treesize of output 3 [2022-11-16 11:59:49,340 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 11:59:50,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:59:50,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 1 [2022-11-16 11:59:58,105 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 250 DAG size of output: 227 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 11:59:58,107 INFO L321 Elim1Store]: treesize reduction 81, result has 90.1 percent of original size [2022-11-16 11:59:58,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771