./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc --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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- 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-5e519f3 [2022-11-02 20:06:20,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:06:20,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:06:20,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:06:20,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:06:20,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:06:20,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:06:20,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:06:20,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:06:20,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:06:20,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:06:20,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:06:20,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:06:20,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:06:20,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:06:20,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:06:20,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:06:20,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:06:20,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:06:20,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:06:20,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:06:20,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:06:20,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:06:20,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:06:20,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:06:20,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:06:20,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:06:20,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:06:20,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:06:20,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:06:20,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:06:20,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:06:20,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:06:20,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:06:20,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:06:20,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:06:20,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:06:20,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:06:20,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:06:20,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:06:20,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:06:20,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:06:20,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:06:20,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:06:20,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:06:20,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:06:20,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:06:20,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:06:20,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:06:20,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:06:20,497 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:06:20,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:06:20,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:06:20,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:06:20,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:06:20,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:06:20,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:06:20,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:06:20,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:06:20,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:06:20,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:06:20,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:06:20,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:06:20,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:20,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:06:20,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:06:20,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:06:20,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:06:20,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:06:20,503 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:06:20,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:06:20,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:06:20,504 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_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2022-11-02 20:06:20,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:06:20,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:06:20,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:06:20,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:06:20,877 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:06:20,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-02 20:06:20,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/c782c143c/1ff6b82da2dd48b0b8b7edb7d057d837/FLAG9813b22ce [2022-11-02 20:06:22,030 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:06:22,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-02 20:06:22,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/c782c143c/1ff6b82da2dd48b0b8b7edb7d057d837/FLAG9813b22ce [2022-11-02 20:06:22,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/c782c143c/1ff6b82da2dd48b0b8b7edb7d057d837 [2022-11-02 20:06:22,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:06:22,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:06:22,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:22,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:06:22,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:06:22,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:22" (1/1) ... [2022-11-02 20:06:22,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2287f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:22, skipping insertion in model container [2022-11-02 20:06:22,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:22" (1/1) ... [2022-11-02 20:06:22,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:06:22,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:06:23,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-02 20:06:23,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-02 20:06:24,357 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,359 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,359 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,361 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,362 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,379 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,380 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,382 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,383 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,385 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,387 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,388 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:24,388 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:06:25,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:06:25,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:06:25,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:06:25,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:06:25,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:06:25,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:06:25,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:06:25,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:06:25,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:06:25,271 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:06:25,678 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,679 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,702 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,703 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,709 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,710 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,725 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,726 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,727 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,728 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,728 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,729 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,729 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:25,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:06:25,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-02 20:06:25,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-02 20:06:25,943 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,943 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,944 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,944 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,945 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,952 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,953 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,956 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,956 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,957 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,957 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:25,998 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:06:26,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:06:26,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:06:26,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:06:26,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:06:26,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:06:26,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:06:26,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:06:26,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:06:26,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:06:26,067 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:06:26,270 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,271 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,281 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,282 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,285 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,286 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,305 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,305 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,306 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,307 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,307 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,309 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,310 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:06:26,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:26,777 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:06:26,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26 WrapperNode [2022-11-02 20:06:26,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:26,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:26,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:06:26,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:06:26,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:26,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,045 INFO L138 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 838 [2022-11-02 20:06:27,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:27,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:06:27,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:06:27,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:06:27,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:06:27,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:06:27,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:06:27,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:06:27,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (1/1) ... [2022-11-02 20:06:27,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:27,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:06:27,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:06:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-02 20:06:27,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:06:27,344 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:06:27,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:06:27,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:06:27,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:06:27,346 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-02 20:06:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-02 20:06:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:06:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:06:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:06:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:06:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:06:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:06:27,348 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:06:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:06:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:06:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:06:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-02 20:06:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-02 20:06:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:06:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 20:06:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 20:06:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2022-11-02 20:06:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2022-11-02 20:06:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:06:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2022-11-02 20:06:27,351 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2022-11-02 20:06:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-02 20:06:27,352 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-02 20:06:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2022-11-02 20:06:27,352 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2022-11-02 20:06:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-11-02 20:06:27,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-11-02 20:06:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:06:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-02 20:06:27,353 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-02 20:06:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-11-02 20:06:27,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-11-02 20:06:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2022-11-02 20:06:27,354 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2022-11-02 20:06:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2022-11-02 20:06:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2022-11-02 20:06:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:06:27,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:06:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-02 20:06:27,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-02 20:06:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:06:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:06:27,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:06:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-02 20:06:27,361 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-02 20:06:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2022-11-02 20:06:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2022-11-02 20:06:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:06:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:06:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:06:27,899 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:06:27,902 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:06:28,054 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2022-11-02 20:06:28,112 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-11-02 20:06:28,447 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2022-11-02 20:06:29,297 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:06:29,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:06:29,315 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-02 20:06:29,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:29 BoogieIcfgContainer [2022-11-02 20:06:29,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:06:29,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:06:29,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:06:29,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:06:29,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:06:22" (1/3) ... [2022-11-02 20:06:29,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5495411f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:29, skipping insertion in model container [2022-11-02 20:06:29,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:26" (2/3) ... [2022-11-02 20:06:29,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5495411f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:29, skipping insertion in model container [2022-11-02 20:06:29,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:29" (3/3) ... [2022-11-02 20:06:29,331 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2022-11-02 20:06:29,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:06:29,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:06:29,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:06:29,472 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;@24324115, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:06:29,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:06:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-02 20:06:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:06:29,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:29,510 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:06:29,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2109277801, now seen corresponding path program 1 times [2022-11-02 20:06:29,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:29,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244845466] [2022-11-02 20:06:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244845466] [2022-11-02 20:06:30,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:06:30,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321098204] [2022-11-02 20:06:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:30,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:30,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:30,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:06:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:31,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:06:31,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-02 20:06:31,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:31,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321098204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:31,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:31,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:06:31,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114287409] [2022-11-02 20:06:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:06:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:06:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:06:31,562 INFO L87 Difference]: Start difference. First operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-02 20:06:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:31,668 INFO L93 Difference]: Finished difference Result 486 states and 686 transitions. [2022-11-02 20:06:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:06:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 182 [2022-11-02 20:06:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:31,689 INFO L225 Difference]: With dead ends: 486 [2022-11-02 20:06:31,690 INFO L226 Difference]: Without dead ends: 239 [2022-11-02 20:06:31,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:06:31,700 INFO L413 NwaCegarLoop]: 318 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, 318 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 [2022-11-02 20:06:31,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:06:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-02 20:06:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-02 20:06:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.195945945945946) internal successors, (177), 149 states have internal predecessors, (177), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-02 20:06:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2022-11-02 20:06:31,773 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 182 [2022-11-02 20:06:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:31,775 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2022-11-02 20:06:31,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-02 20:06:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2022-11-02 20:06:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:06:31,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:31,790 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:06:31,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:06:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:06:32,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1716640621, now seen corresponding path program 1 times [2022-11-02 20:06:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538931865] [2022-11-02 20:06:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:32,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:06:32,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891290326] [2022-11-02 20:06:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:32,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:32,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:06:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:33,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:06:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:06:33,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538931865] [2022-11-02 20:06:33,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:06:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891290326] [2022-11-02 20:06:33,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891290326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:33,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:33,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:06:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085850517] [2022-11-02 20:06:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:33,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:06:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:06:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:06:33,261 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-02 20:06:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:33,668 INFO L93 Difference]: Finished difference Result 464 states and 608 transitions. [2022-11-02 20:06:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:06:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2022-11-02 20:06:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:33,683 INFO L225 Difference]: With dead ends: 464 [2022-11-02 20:06:33,684 INFO L226 Difference]: Without dead ends: 246 [2022-11-02 20:06:33,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:06:33,692 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 324 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:33,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1037 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:06:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-02 20:06:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-02 20:06:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.196078431372549) internal successors, (183), 155 states have internal predecessors, (183), 69 states have call successors, (69), 22 states have call predecessors, (69), 23 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2022-11-02 20:06:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 322 transitions. [2022-11-02 20:06:33,747 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 322 transitions. Word has length 182 [2022-11-02 20:06:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:33,748 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 322 transitions. [2022-11-02 20:06:33,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-02 20:06:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 322 transitions. [2022-11-02 20:06:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:06:33,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:33,756 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 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] [2022-11-02 20:06:33,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:33,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash 421077933, now seen corresponding path program 1 times [2022-11-02 20:06:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:33,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58412686] [2022-11-02 20:06:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:34,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:06:34,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046363366] [2022-11-02 20:06:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:34,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:34,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:06:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:35,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:06:35,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-02 20:06:35,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:35,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:35,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58412686] [2022-11-02 20:06:35,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:06:35,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046363366] [2022-11-02 20:06:35,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046363366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:35,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:35,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:06:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841516113] [2022-11-02 20:06:35,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:06:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:06:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:06:35,244 INFO L87 Difference]: Start difference. First operand 246 states and 322 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:06:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:35,754 INFO L93 Difference]: Finished difference Result 404 states and 531 transitions. [2022-11-02 20:06:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:06:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 182 [2022-11-02 20:06:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:35,759 INFO L225 Difference]: With dead ends: 404 [2022-11-02 20:06:35,760 INFO L226 Difference]: Without dead ends: 239 [2022-11-02 20:06:35,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:06:35,762 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 321 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:35,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1509 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:06:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-02 20:06:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-02 20:06:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 149 states have internal predecessors, (176), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-02 20:06:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2022-11-02 20:06:35,785 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 182 [2022-11-02 20:06:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:35,786 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2022-11-02 20:06:35,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:06:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2022-11-02 20:06:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:06:35,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:35,791 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:06:35,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:36,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:36,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash -238453589, now seen corresponding path program 1 times [2022-11-02 20:06:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:36,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042104679] [2022-11-02 20:06:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:36,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:36,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:06:36,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578410767] [2022-11-02 20:06:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:36,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:36,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:06:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:36,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:06:37,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-02 20:06:37,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:37,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042104679] [2022-11-02 20:06:37,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:06:37,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578410767] [2022-11-02 20:06:37,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578410767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:37,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:37,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:06:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498151070] [2022-11-02 20:06:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:37,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:06:37,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:06:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:37,050 INFO L87 Difference]: Start difference. First operand 239 states and 311 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:06:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:37,104 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2022-11-02 20:06:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:06:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 182 [2022-11-02 20:06:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:37,114 INFO L225 Difference]: With dead ends: 474 [2022-11-02 20:06:37,114 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:06:37,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:06:37,119 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:37,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:06:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:06:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-02 20:06:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1842105263157894) internal successors, (180), 153 states have internal predecessors, (180), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2022-11-02 20:06:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2022-11-02 20:06:37,155 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 182 [2022-11-02 20:06:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:37,156 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2022-11-02 20:06:37,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:06:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2022-11-02 20:06:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-02 20:06:37,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:37,162 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:06:37,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:37,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:37,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash -168770197, now seen corresponding path program 1 times [2022-11-02 20:06:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:37,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880558084] [2022-11-02 20:06:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:37,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:06:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:06:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:06:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:06:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:06:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:06:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:06:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:06:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:06:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:06:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:06:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:06:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:06:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:06:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:06:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-02 20:06:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 20:06:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-02 20:06:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:06:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:06:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-02 20:06:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-02 20:06:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-02 20:06:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-02 20:06:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:40,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880558084] [2022-11-02 20:06:40,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880558084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:06:40,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629113230] [2022-11-02 20:06:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:40,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:40,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:40,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:40,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:06:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:41,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:06:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:41,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:06:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:06:41,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:41,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629113230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:41,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:06:41,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2022-11-02 20:06:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749051971] [2022-11-02 20:06:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:41,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:06:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:41,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:06:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:06:41,694 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-02 20:06:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:42,035 INFO L93 Difference]: Finished difference Result 474 states and 611 transitions. [2022-11-02 20:06:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:06:42,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 194 [2022-11-02 20:06:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:42,038 INFO L225 Difference]: With dead ends: 474 [2022-11-02 20:06:42,038 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:06:42,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:06:42,041 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 35 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:42,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1900 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2022-11-02 20:06:42,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:06:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-02 20:06:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2022-11-02 20:06:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 320 transitions. [2022-11-02 20:06:42,059 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 320 transitions. Word has length 194 [2022-11-02 20:06:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:42,059 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 320 transitions. [2022-11-02 20:06:42,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-02 20:06:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 320 transitions. [2022-11-02 20:06:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 20:06:42,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:42,063 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:06:42,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:42,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1760895517, now seen corresponding path program 1 times [2022-11-02 20:06:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812980866] [2022-11-02 20:06:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:06:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:06:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:06:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:06:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:06:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:06:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:06:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:06:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:06:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:06:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:06:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:06:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:06:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:06:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:06:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:06:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-02 20:06:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-02 20:06:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-02 20:06:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-02 20:06:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-02 20:06:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-02 20:06:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-02 20:06:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-02 20:06:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-02 20:06:44,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812980866] [2022-11-02 20:06:44,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812980866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:06:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613997753] [2022-11-02 20:06:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:44,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:06:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:44,103 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:06:44,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:06:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:06:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:46,414 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-02 20:06:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-02 20:06:56,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:56,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613997753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:56,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:06:56,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:06:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110113187] [2022-11-02 20:06:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:56,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:06:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:06:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-11-02 20:06:56,833 INFO L87 Difference]: Start difference. First operand 248 states and 320 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:06:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:57,173 INFO L93 Difference]: Finished difference Result 476 states and 619 transitions. [2022-11-02 20:06:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:06:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 200 [2022-11-02 20:06:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:57,176 INFO L225 Difference]: With dead ends: 476 [2022-11-02 20:06:57,177 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:06:57,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2022-11-02 20:06:57,179 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 5 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:57,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1671 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 432 Unchecked, 0.2s Time] [2022-11-02 20:06:57,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:06:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2022-11-02 20:06:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 157 states have internal predecessors, (186), 68 states have call successors, (68), 24 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2022-11-02 20:06:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 322 transitions. [2022-11-02 20:06:57,198 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 322 transitions. Word has length 200 [2022-11-02 20:06:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:57,199 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 322 transitions. [2022-11-02 20:06:57,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:06:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 322 transitions. [2022-11-02 20:06:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-02 20:06:57,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:57,203 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:06:57,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:06:57,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:57,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash -661330404, now seen corresponding path program 1 times [2022-11-02 20:06:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:57,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371074750] [2022-11-02 20:06:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:06:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:06:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:06:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:06:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:06:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:06:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:06:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:06:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:06:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:06:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:06:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:06:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:06:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:06:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:06:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:06:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:06:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:06:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:06:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:06:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:06:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:06:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:06:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-02 20:06:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-02 20:06:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-02 20:06:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-02 20:06:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-02 20:06:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371074750] [2022-11-02 20:06:58,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371074750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:58,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:58,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:06:58,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153850165] [2022-11-02 20:06:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:58,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:06:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:06:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:06:58,973 INFO L87 Difference]: Start difference. First operand 250 states and 322 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-02 20:07:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:00,727 INFO L93 Difference]: Finished difference Result 408 states and 531 transitions. [2022-11-02 20:07:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:07:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2022-11-02 20:07:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:00,732 INFO L225 Difference]: With dead ends: 408 [2022-11-02 20:07:00,732 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:07:00,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:07:00,734 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 138 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:00,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 733 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:07:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:07:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2022-11-02 20:07:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (70), 68 states have call predecessors, (70), 67 states have call successors, (70) [2022-11-02 20:07:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2022-11-02 20:07:00,768 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 205 [2022-11-02 20:07:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:00,770 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2022-11-02 20:07:00,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-02 20:07:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2022-11-02 20:07:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:07:00,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:00,776 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:07:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:07:00,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1796534111, now seen corresponding path program 1 times [2022-11-02 20:07:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:00,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49527492] [2022-11-02 20:07:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:07:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:07:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:07:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-02 20:07:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-02 20:07:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-02 20:07:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-02 20:07:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-02 20:07:03,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:03,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49527492] [2022-11-02 20:07:03,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49527492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:03,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:03,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:07:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435132670] [2022-11-02 20:07:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:07:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:07:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:07:03,817 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-02 20:07:06,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:06,721 INFO L93 Difference]: Finished difference Result 424 states and 554 transitions. [2022-11-02 20:07:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:07:06,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 210 [2022-11-02 20:07:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:06,725 INFO L225 Difference]: With dead ends: 424 [2022-11-02 20:07:06,725 INFO L226 Difference]: Without dead ends: 269 [2022-11-02 20:07:06,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:07:06,727 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 372 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:06,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1147 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:07:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-02 20:07:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2022-11-02 20:07:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 162 states have internal predecessors, (189), 68 states have call successors, (68), 24 states have call predecessors, (68), 25 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-02 20:07:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 330 transitions. [2022-11-02 20:07:06,756 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 330 transitions. Word has length 210 [2022-11-02 20:07:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:06,757 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 330 transitions. [2022-11-02 20:07:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-02 20:07:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 330 transitions. [2022-11-02 20:07:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-02 20:07:06,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:06,762 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:07:06,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:07:06,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:06,763 INFO L85 PathProgramCache]: Analyzing trace with hash -130056786, now seen corresponding path program 2 times [2022-11-02 20:07:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931361886] [2022-11-02 20:07:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:06,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:07:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:07:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:07:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-02 20:07:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-02 20:07:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-02 20:07:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-02 20:07:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-11-02 20:07:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:10,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931361886] [2022-11-02 20:07:10,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931361886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318375327] [2022-11-02 20:07:10,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:07:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:10,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:10,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:07:11,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:07:11,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:07:11,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:07:11,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-02 20:07:11,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:11,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318375327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:11,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:11,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-02 20:07:11,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52984360] [2022-11-02 20:07:11,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:11,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:11,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:07:11,629 INFO L87 Difference]: Start difference. First operand 255 states and 330 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-02 20:07:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:11,711 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2022-11-02 20:07:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 221 [2022-11-02 20:07:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:11,719 INFO L225 Difference]: With dead ends: 263 [2022-11-02 20:07:11,719 INFO L226 Difference]: Without dead ends: 261 [2022-11-02 20:07:11,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:07:11,722 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1212 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-02 20:07:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2022-11-02 20:07:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.170731707317073) internal successors, (192), 165 states have internal predecessors, (192), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-02 20:07:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 333 transitions. [2022-11-02 20:07:11,758 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 333 transitions. Word has length 221 [2022-11-02 20:07:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:11,759 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 333 transitions. [2022-11-02 20:07:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-02 20:07:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 333 transitions. [2022-11-02 20:07:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-02 20:07:11,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:11,765 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-11-02 20:07:11,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:11,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:11,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:11,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1053277728, now seen corresponding path program 1 times [2022-11-02 20:07:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:11,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642546986] [2022-11-02 20:07:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:11,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:07:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:07:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:07:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-02 20:07:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-02 20:07:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-02 20:07:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-02 20:07:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-11-02 20:07:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-11-02 20:07:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-11-02 20:07:15,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642546986] [2022-11-02 20:07:15,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642546986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248098570] [2022-11-02 20:07:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:15,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:15,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:15,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:15,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:07:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:16,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:07:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-11-02 20:07:16,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-02 20:07:17,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248098570] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:17,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:17,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 8] total 24 [2022-11-02 20:07:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463388377] [2022-11-02 20:07:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:17,268 INFO L87 Difference]: Start difference. First operand 259 states and 333 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-02 20:07:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:17,360 INFO L93 Difference]: Finished difference Result 267 states and 340 transitions. [2022-11-02 20:07:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:07:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 234 [2022-11-02 20:07:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:17,364 INFO L225 Difference]: With dead ends: 267 [2022-11-02 20:07:17,364 INFO L226 Difference]: Without dead ends: 265 [2022-11-02 20:07:17,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:07:17,365 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 6 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:17,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1222 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-02 20:07:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2022-11-02 20:07:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 168 states have internal predecessors, (195), 68 states have call successors, (68), 26 states have call predecessors, (68), 27 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-02 20:07:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 336 transitions. [2022-11-02 20:07:17,393 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 336 transitions. Word has length 234 [2022-11-02 20:07:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:17,394 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 336 transitions. [2022-11-02 20:07:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-02 20:07:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 336 transitions. [2022-11-02 20:07:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:07:17,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:17,400 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-02 20:07:17,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:17,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:07:17,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2025730660, now seen corresponding path program 1 times [2022-11-02 20:07:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:17,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141514571] [2022-11-02 20:07:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:07:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:07:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:20,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:07:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-02 20:07:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-02 20:07:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-02 20:07:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:07:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-02 20:07:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-02 20:07:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-02 20:07:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141514571] [2022-11-02 20:07:21,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141514571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:21,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460765851] [2022-11-02 20:07:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:21,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:21,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:07:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:22,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:22,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-02 20:07:22,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:22,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460765851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:22,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:22,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2022-11-02 20:07:22,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854483896] [2022-11-02 20:07:22,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:22,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:22,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:22,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:07:22,463 INFO L87 Difference]: Start difference. First operand 263 states and 336 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:07:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:22,505 INFO L93 Difference]: Finished difference Result 345 states and 437 transitions. [2022-11-02 20:07:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 241 [2022-11-02 20:07:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:22,508 INFO L225 Difference]: With dead ends: 345 [2022-11-02 20:07:22,509 INFO L226 Difference]: Without dead ends: 272 [2022-11-02 20:07:22,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:07:22,510 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 3 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:22,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1241 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-02 20:07:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2022-11-02 20:07:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (74), 69 states have call predecessors, (74), 67 states have call successors, (74) [2022-11-02 20:07:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 340 transitions. [2022-11-02 20:07:22,534 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 340 transitions. Word has length 241 [2022-11-02 20:07:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:22,535 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 340 transitions. [2022-11-02 20:07:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:07:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 340 transitions. [2022-11-02 20:07:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:07:22,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:22,539 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-02 20:07:22,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-02 20:07:22,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:22,766 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1682430622, now seen corresponding path program 1 times [2022-11-02 20:07:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:22,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388413009] [2022-11-02 20:07:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:07:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:07:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:07:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-02 20:07:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-02 20:07:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-02 20:07:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:07:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-02 20:07:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-02 20:07:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-02 20:07:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388413009] [2022-11-02 20:07:26,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388413009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213444675] [2022-11-02 20:07:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:26,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:26,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:26,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:26,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:07:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:27,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 20:07:27,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:28,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:07:28,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:07:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 198 proven. 31 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-02 20:07:28,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:29,469 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:07:29,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 [2022-11-02 20:07:29,483 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-02 20:07:29,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 12 [2022-11-02 20:07:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-02 20:07:29,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213444675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:29,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:07:29,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 14] total 31 [2022-11-02 20:07:29,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889323146] [2022-11-02 20:07:29,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:29,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:07:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:29,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:07:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:07:29,620 INFO L87 Difference]: Start difference. First operand 267 states and 340 transitions. Second operand has 31 states, 27 states have (on average 5.962962962962963) internal successors, (161), 25 states have internal predecessors, (161), 14 states have call successors, (75), 9 states have call predecessors, (75), 7 states have return successors, (66), 11 states have call predecessors, (66), 14 states have call successors, (66) [2022-11-02 20:07:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:35,533 INFO L93 Difference]: Finished difference Result 486 states and 617 transitions. [2022-11-02 20:07:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:07:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.962962962962963) internal successors, (161), 25 states have internal predecessors, (161), 14 states have call successors, (75), 9 states have call predecessors, (75), 7 states have return successors, (66), 11 states have call predecessors, (66), 14 states have call successors, (66) Word has length 241 [2022-11-02 20:07:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:35,538 INFO L225 Difference]: With dead ends: 486 [2022-11-02 20:07:35,538 INFO L226 Difference]: Without dead ends: 288 [2022-11-02 20:07:35,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 535 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=459, Invalid=2963, Unknown=0, NotChecked=0, Total=3422 [2022-11-02 20:07:35,542 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 339 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 4575 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 4575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 447 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1945 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 4575 Invalid, 0 Unknown, 447 Unchecked, 4.1s Time] [2022-11-02 20:07:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-02 20:07:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 267. [2022-11-02 20:07:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (73), 69 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-02 20:07:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2022-11-02 20:07:35,580 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 241 [2022-11-02 20:07:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:35,581 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2022-11-02 20:07:35,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.962962962962963) internal successors, (161), 25 states have internal predecessors, (161), 14 states have call successors, (75), 9 states have call predecessors, (75), 7 states have return successors, (66), 11 states have call predecessors, (66), 14 states have call successors, (66) [2022-11-02 20:07:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2022-11-02 20:07:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-02 20:07:35,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:35,585 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-02 20:07:35,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:35,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash 762116007, now seen corresponding path program 2 times [2022-11-02 20:07:35,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:35,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473519887] [2022-11-02 20:07:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:07:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:07:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:07:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:07:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:07:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:07:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:07:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:07:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:07:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:07:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:07:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:07:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:07:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:07:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:07:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:07:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-02 20:07:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-02 20:07:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-02 20:07:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:07:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-02 20:07:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-02 20:07:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-02 20:07:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:07:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:07:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:07:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-11-02 20:07:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-02 20:07:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-11-02 20:07:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473519887] [2022-11-02 20:07:53,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473519887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309381597] [2022-11-02 20:07:53,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:07:53,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:53,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:53,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:53,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:07:55,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:07:55,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:07:55,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 172 conjunts are in the unsatisfiable core [2022-11-02 20:07:55,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:55,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:07:55,673 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:07:55,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:07:55,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 20:07:55,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-02 20:07:56,379 INFO L356 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-11-02 20:07:56,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2022-11-02 20:07:56,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 20:07:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:07:56,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:07:56,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:07:56,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:07:57,693 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:07:57,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:07:57,735 INFO L356 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-11-02 20:07:57,736 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-02 20:07:57,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:57,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:07:57,939 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_114| input size 50 context size 50 output size 50 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java: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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) 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) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 20:07:57,943 INFO L158 Benchmark]: Toolchain (without parser) took 95556.23ms. Allocated memory was 151.0MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 108.1MB in the beginning and 732.1MB in the end (delta: -624.0MB). Peak memory consumption was 562.7MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,944 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:57,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4386.08ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 107.7MB in the beginning and 141.9MB in the end (delta: -34.2MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 270.25ms. Allocated memory is still 207.6MB. Free memory was 141.9MB in the beginning and 130.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,945 INFO L158 Benchmark]: Boogie Preprocessor took 182.28ms. Allocated memory is still 207.6MB. Free memory was 130.3MB in the beginning and 121.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,946 INFO L158 Benchmark]: RCFGBuilder took 2084.11ms. Allocated memory is still 207.6MB. Free memory was 121.9MB in the beginning and 114.6MB in the end (delta: 7.3MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,946 INFO L158 Benchmark]: TraceAbstraction took 88620.19ms. Allocated memory was 207.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 113.6MB in the beginning and 732.1MB in the end (delta: -618.6MB). Peak memory consumption was 512.9MB. Max. memory is 16.1GB. [2022-11-02 20:07:57,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4386.08ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 107.7MB in the beginning and 141.9MB in the end (delta: -34.2MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 270.25ms. Allocated memory is still 207.6MB. Free memory was 141.9MB in the beginning and 130.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 182.28ms. Allocated memory is still 207.6MB. Free memory was 130.3MB in the beginning and 121.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2084.11ms. Allocated memory is still 207.6MB. Free memory was 121.9MB in the beginning and 114.6MB in the end (delta: 7.3MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * TraceAbstraction took 88620.19ms. Allocated memory was 207.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 113.6MB in the beginning and 732.1MB in the end (delta: -618.6MB). Peak memory consumption was 512.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_114| input size 50 context size 50 output size 50 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_114| input size 50 context size 50 output size 50: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 20:07:57,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc --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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- 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-5e519f3 [2022-11-02 20:08:00,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:00,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:00,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:00,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:00,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:00,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:00,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:00,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:00,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:00,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:00,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:00,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:00,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:00,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:00,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:00,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:00,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:00,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:00,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:00,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:00,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:00,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:00,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:00,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:00,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:00,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:00,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:00,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:00,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:00,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:00,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:00,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:00,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:00,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:00,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:00,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:00,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:00,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:00,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:00,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:00,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:08:00,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:00,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:00,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:00,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:00,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:00,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:00,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:00,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:00,665 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:00,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:00,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:00,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:00,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:00,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:00,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:08:00,666 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:08:00,667 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:08:00,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:00,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:00,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:00,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:00,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:00,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:00,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:00,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:00,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:00,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:00,669 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:08:00,669 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:08:00,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:08:00,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:08:00,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:00,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:08:00,670 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_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2022-11-02 20:08:01,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:01,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:01,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:01,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:01,119 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:01,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-02 20:08:01,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/2c6a03caa/bec1ef2e97a14c4e86dc186933689714/FLAGa8ba7ad15 [2022-11-02 20:08:02,262 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:02,263 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-02 20:08:02,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/2c6a03caa/bec1ef2e97a14c4e86dc186933689714/FLAGa8ba7ad15 [2022-11-02 20:08:02,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/data/2c6a03caa/bec1ef2e97a14c4e86dc186933689714 [2022-11-02 20:08:02,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:02,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:02,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:02,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:02,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:02,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:02" (1/1) ... [2022-11-02 20:08:02,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3245b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:02, skipping insertion in model container [2022-11-02 20:08:02,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:02" (1/1) ... [2022-11-02 20:08:02,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:02,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:03,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-02 20:08:03,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-02 20:08:04,485 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,486 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,489 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,490 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,492 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,512 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,523 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,525 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,537 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,539 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,540 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,541 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:04,541 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:08:05,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:08:05,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:08:05,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:08:05,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:08:05,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:08:05,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:08:05,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:08:05,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:08:05,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:08:05,342 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:08:05,700 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,701 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,728 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,735 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,742 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,743 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,774 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,776 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,776 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,777 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,777 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,778 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,779 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:05,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:05,905 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:08:06,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:06,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-02 20:08:06,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-02 20:08:06,081 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,082 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,082 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,083 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,083 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,094 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,094 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,096 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,097 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,098 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,099 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,099 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,099 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,146 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:08:06,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:08:06,149 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:08:06,151 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:08:06,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:08:06,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:08:06,153 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:08:06,153 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:08:06,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:08:06,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:08:06,234 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:08:06,380 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,381 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,390 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,391 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,412 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,413 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,431 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,432 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,434 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,434 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,435 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,436 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,437 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:06,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:06,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-02 20:08:06,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-02 20:08:06,590 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,591 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,591 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,592 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,593 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,599 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,600 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,602 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,603 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,605 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,606 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,607 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,608 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,646 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:08:06,647 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:08:06,648 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:08:06,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:08:06,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:08:06,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:08:06,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:08:06,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:08:06,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:08:06,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:08:06,677 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:08:06,805 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,805 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,817 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,818 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,821 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,822 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,832 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,834 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,835 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,835 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,836 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,836 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,837 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:08:06,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:07,339 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:07,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07 WrapperNode [2022-11-02 20:08:07,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:07,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:07,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:07,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:07,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,670 INFO L138 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 71, calls inlined = 19, statements flattened = 824 [2022-11-02 20:08:07,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:07,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:07,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:07,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:07,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:07,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:07,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:07,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:07,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (1/1) ... [2022-11-02 20:08:07,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:07,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:07,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:07,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-02 20:08:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:08:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:08:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:08:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:08:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-02 20:08:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-02 20:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:08:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:08:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-02 20:08:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-02 20:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 20:08:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 20:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2022-11-02 20:08:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2022-11-02 20:08:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2022-11-02 20:08:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2022-11-02 20:08:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-02 20:08:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-02 20:08:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2022-11-02 20:08:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2022-11-02 20:08:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-11-02 20:08:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-11-02 20:08:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:08:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:08:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-02 20:08:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-02 20:08:07,991 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-02 20:08:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-11-02 20:08:07,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-11-02 20:08:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2022-11-02 20:08:07,992 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2022-11-02 20:08:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:08:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-02 20:08:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2022-11-02 20:08:07,992 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2022-11-02 20:08:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:08:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:08:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-02 20:08:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 20:08:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-02 20:08:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-02 20:08:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:08:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:08:07,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:08:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-02 20:08:07,994 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-02 20:08:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2022-11-02 20:08:07,995 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2022-11-02 20:08:08,551 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:08,553 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:08,772 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2022-11-02 20:08:08,923 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-11-02 20:08:09,659 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2022-11-02 20:08:11,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:11,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:11,180 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-02 20:08:11,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:11 BoogieIcfgContainer [2022-11-02 20:08:11,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:11,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:11,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:11,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:11,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:02" (1/3) ... [2022-11-02 20:08:11,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:11, skipping insertion in model container [2022-11-02 20:08:11,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:07" (2/3) ... [2022-11-02 20:08:11,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:11, skipping insertion in model container [2022-11-02 20:08:11,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:11" (3/3) ... [2022-11-02 20:08:11,195 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2022-11-02 20:08:11,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:11,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:08:11,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:11,287 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;@1e155e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:11,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:08:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-02 20:08:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-02 20:08:11,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:11,313 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:08:11,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:11,320 INFO L85 PathProgramCache]: Analyzing trace with hash -501442740, now seen corresponding path program 1 times [2022-11-02 20:08:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:11,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839665110] [2022-11-02 20:08:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:11,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:11,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:11,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:11,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:08:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:08:12,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-02 20:08:12,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:12,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:12,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839665110] [2022-11-02 20:08:12,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839665110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:12,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:12,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483937427] [2022-11-02 20:08:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:12,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:08:12,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:08:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:08:12,958 INFO L87 Difference]: Start difference. First operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:08:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:13,036 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2022-11-02 20:08:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:08:13,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2022-11-02 20:08:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:13,051 INFO L225 Difference]: With dead ends: 456 [2022-11-02 20:08:13,051 INFO L226 Difference]: Without dead ends: 224 [2022-11-02 20:08:13,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:08:13,060 INFO L413 NwaCegarLoop]: 300 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, 300 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 [2022-11-02 20:08:13,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-02 20:08:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2022-11-02 20:08:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 138 states have internal predecessors, (165), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-02 20:08:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions. [2022-11-02 20:08:13,166 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 178 [2022-11-02 20:08:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:13,168 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions. [2022-11-02 20:08:13,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:08:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions. [2022-11-02 20:08:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-02 20:08:13,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:13,186 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:08:13,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:13,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1965212336, now seen corresponding path program 1 times [2022-11-02 20:08:13,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:13,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795494020] [2022-11-02 20:08:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:13,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:13,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:08:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:14,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:14,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-02 20:08:14,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:14,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:14,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795494020] [2022-11-02 20:08:14,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795494020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:14,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:08:14,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489850348] [2022-11-02 20:08:14,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:14,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:08:14,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:08:14,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:14,927 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:08:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:15,065 INFO L93 Difference]: Finished difference Result 443 states and 581 transitions. [2022-11-02 20:08:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:15,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2022-11-02 20:08:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:15,073 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:08:15,073 INFO L226 Difference]: Without dead ends: 228 [2022-11-02 20:08:15,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:15,082 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:15,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1163 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-02 20:08:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-02 20:08:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 140 states have (on average 1.2) internal successors, (168), 141 states have internal predecessors, (168), 65 states have call successors, (65), 21 states have call predecessors, (65), 22 states have return successors, (65), 65 states have call predecessors, (65), 64 states have call successors, (65) [2022-11-02 20:08:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2022-11-02 20:08:15,107 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 178 [2022-11-02 20:08:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:15,107 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2022-11-02 20:08:15,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:08:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2022-11-02 20:08:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-02 20:08:15,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:15,111 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-02 20:08:15,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:15,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:15,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:15,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1472595880, now seen corresponding path program 1 times [2022-11-02 20:08:15,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068321444] [2022-11-02 20:08:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:15,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:08:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:16,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:08:16,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-02 20:08:16,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:16,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:16,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068321444] [2022-11-02 20:08:16,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068321444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:16,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:16,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:08:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595642280] [2022-11-02 20:08:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:16,665 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-02 20:08:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:17,053 INFO L93 Difference]: Finished difference Result 449 states and 585 transitions. [2022-11-02 20:08:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:08:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 190 [2022-11-02 20:08:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:17,057 INFO L225 Difference]: With dead ends: 449 [2022-11-02 20:08:17,058 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:08:17,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:17,060 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1319 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:08:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:08:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-02 20:08:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 65 states have call successors, (65), 21 states have call predecessors, (65), 23 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2022-11-02 20:08:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 300 transitions. [2022-11-02 20:08:17,100 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 300 transitions. Word has length 190 [2022-11-02 20:08:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:17,102 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 300 transitions. [2022-11-02 20:08:17,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-02 20:08:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 300 transitions. [2022-11-02 20:08:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:08:17,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:17,108 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:17,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:17,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 10564960, now seen corresponding path program 1 times [2022-11-02 20:08:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134192302] [2022-11-02 20:08:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:17,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:17,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:17,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:08:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:18,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:08:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:08:18,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:18,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:18,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134192302] [2022-11-02 20:08:18,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134192302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:18,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:18,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:08:18,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321016783] [2022-11-02 20:08:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:08:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:08:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:18,890 INFO L87 Difference]: Start difference. First operand 230 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:08:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:19,091 INFO L93 Difference]: Finished difference Result 447 states and 585 transitions. [2022-11-02 20:08:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 195 [2022-11-02 20:08:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:19,098 INFO L225 Difference]: With dead ends: 447 [2022-11-02 20:08:19,098 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 20:08:19,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:19,101 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 36 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:19,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 796 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 20:08:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 20:08:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 149 states have internal predecessors, (175), 66 states have call successors, (66), 21 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2022-11-02 20:08:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2022-11-02 20:08:19,147 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 195 [2022-11-02 20:08:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2022-11-02 20:08:19,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:08:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2022-11-02 20:08:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:08:19,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:19,154 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:19,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash 11341472, now seen corresponding path program 1 times [2022-11-02 20:08:19,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:19,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133370577] [2022-11-02 20:08:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:19,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:08:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:20,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:21,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:08:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:08:21,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:21,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:21,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133370577] [2022-11-02 20:08:21,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133370577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:21,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:21,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419934419] [2022-11-02 20:08:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:21,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:21,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:21,935 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-02 20:08:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:24,397 INFO L93 Difference]: Finished difference Result 466 states and 606 transitions. [2022-11-02 20:08:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:24,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 195 [2022-11-02 20:08:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:24,401 INFO L225 Difference]: With dead ends: 466 [2022-11-02 20:08:24,401 INFO L226 Difference]: Without dead ends: 241 [2022-11-02 20:08:24,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:08:24,403 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 38 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:24,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2267 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 146 Unchecked, 2.3s Time] [2022-11-02 20:08:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-02 20:08:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-02 20:08:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 152 states have internal predecessors, (179), 66 states have call successors, (66), 22 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2022-11-02 20:08:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2022-11-02 20:08:24,427 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 195 [2022-11-02 20:08:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:24,427 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2022-11-02 20:08:24,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-02 20:08:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2022-11-02 20:08:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-02 20:08:24,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:24,432 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:24,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:24,647 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -145875486, now seen corresponding path program 1 times [2022-11-02 20:08:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:24,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218448588] [2022-11-02 20:08:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:24,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:24,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:24,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:24,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:08:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:26,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:26,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:26,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:08:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:08:27,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:27,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218448588] [2022-11-02 20:08:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218448588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:27,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:27,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:08:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037922801] [2022-11-02 20:08:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:08:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:08:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:08:27,361 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2022-11-02 20:08:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:29,524 INFO L93 Difference]: Finished difference Result 467 states and 607 transitions. [2022-11-02 20:08:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 201 [2022-11-02 20:08:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:29,529 INFO L225 Difference]: With dead ends: 467 [2022-11-02 20:08:29,529 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:08:29,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:08:29,534 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 36 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:29,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2278 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 105 Invalid, 0 Unknown, 236 Unchecked, 2.0s Time] [2022-11-02 20:08:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:08:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-02 20:08:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 154 states have internal predecessors, (181), 67 states have call successors, (67), 23 states have call predecessors, (67), 24 states have return successors, (70), 66 states have call predecessors, (70), 66 states have call successors, (70) [2022-11-02 20:08:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2022-11-02 20:08:29,555 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 201 [2022-11-02 20:08:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:29,556 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2022-11-02 20:08:29,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2022-11-02 20:08:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2022-11-02 20:08:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-02 20:08:29,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:29,561 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:29,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:29,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1621013711, now seen corresponding path program 1 times [2022-11-02 20:08:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:29,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790781563] [2022-11-02 20:08:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:29,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:29,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:29,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:29,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:08:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:31,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:08:31,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-02 20:08:31,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:31,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:31,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790781563] [2022-11-02 20:08:31,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790781563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:31,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:31,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:08:31,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372603691] [2022-11-02 20:08:31,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:31,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:31,568 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:08:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:31,988 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions. [2022-11-02 20:08:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:08:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2022-11-02 20:08:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:31,992 INFO L225 Difference]: With dead ends: 406 [2022-11-02 20:08:31,993 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 20:08:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:31,995 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1320 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 20:08:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2022-11-02 20:08:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 23 states have call predecessors, (67), 22 states have return successors, (68), 65 states have call predecessors, (68), 66 states have call successors, (68) [2022-11-02 20:08:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2022-11-02 20:08:32,015 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 206 [2022-11-02 20:08:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:32,016 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2022-11-02 20:08:32,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-02 20:08:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2022-11-02 20:08:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-02 20:08:32,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:32,020 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:08:32,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:32,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 500291049, now seen corresponding path program 1 times [2022-11-02 20:08:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:32,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325444065] [2022-11-02 20:08:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:32,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:32,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:08:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:34,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:08:34,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-02 20:08:34,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:34,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:34,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325444065] [2022-11-02 20:08:34,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325444065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:34,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:34,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:08:34,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526301629] [2022-11-02 20:08:34,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:34,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:34,410 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-02 20:08:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:34,812 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2022-11-02 20:08:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:34,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 211 [2022-11-02 20:08:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:34,815 INFO L225 Difference]: With dead ends: 397 [2022-11-02 20:08:34,816 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:08:34,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:34,817 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:34,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1580 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:08:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2022-11-02 20:08:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2022-11-02 20:08:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2022-11-02 20:08:34,837 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 211 [2022-11-02 20:08:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:34,838 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2022-11-02 20:08:34,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-02 20:08:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2022-11-02 20:08:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-02 20:08:34,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:34,842 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:08:34,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:35,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2127170151, now seen corresponding path program 2 times [2022-11-02 20:08:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:35,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599962819] [2022-11-02 20:08:35,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:35,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:35,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:35,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:35,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:08:35,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:35,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:35,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:08:35,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-11-02 20:08:36,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:36,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599962819] [2022-11-02 20:08:36,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599962819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:36,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:36,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:08:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155560476] [2022-11-02 20:08:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:36,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:08:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:08:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:36,063 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-02 20:08:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:36,164 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2022-11-02 20:08:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:36,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 217 [2022-11-02 20:08:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:36,167 INFO L225 Difference]: With dead ends: 249 [2022-11-02 20:08:36,168 INFO L226 Difference]: Without dead ends: 247 [2022-11-02 20:08:36,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:36,169 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 12 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:36,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1138 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-02 20:08:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2022-11-02 20:08:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 155 states have internal predecessors, (180), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2022-11-02 20:08:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2022-11-02 20:08:36,189 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 217 [2022-11-02 20:08:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:36,190 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2022-11-02 20:08:36,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-02 20:08:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2022-11-02 20:08:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:08:36,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:36,193 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-02 20:08:36,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:36,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:36,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash 533171121, now seen corresponding path program 1 times [2022-11-02 20:08:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:36,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455342223] [2022-11-02 20:08:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:36,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:36,424 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:36,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:08:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:08:38,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-02 20:08:39,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:39,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:39,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455342223] [2022-11-02 20:08:39,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455342223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:39,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:39,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:08:39,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399917241] [2022-11-02 20:08:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:08:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:08:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:39,664 INFO L87 Difference]: Start difference. First operand 245 states and 318 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-02 20:08:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:41,627 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2022-11-02 20:08:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:08:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 230 [2022-11-02 20:08:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:41,634 INFO L225 Difference]: With dead ends: 409 [2022-11-02 20:08:41,634 INFO L226 Difference]: Without dead ends: 247 [2022-11-02 20:08:41,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:41,636 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 7 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:41,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1073 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 43 Unchecked, 1.5s Time] [2022-11-02 20:08:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-02 20:08:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2022-11-02 20:08:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 154 states have internal predecessors, (180), 66 states have call successors, (66), 24 states have call predecessors, (66), 24 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-02 20:08:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2022-11-02 20:08:41,654 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 230 [2022-11-02 20:08:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:41,655 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2022-11-02 20:08:41,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-02 20:08:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2022-11-02 20:08:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-02 20:08:41,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:41,659 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-11-02 20:08:41,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:41,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:41,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash 925847752, now seen corresponding path program 2 times [2022-11-02 20:08:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:41,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125698854] [2022-11-02 20:08:41,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:41,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:41,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:41,882 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:41,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:08:44,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:44,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:44,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:08:44,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-02 20:08:45,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:45,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:45,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125698854] [2022-11-02 20:08:45,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125698854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:45,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:45,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:08:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426280815] [2022-11-02 20:08:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:45,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:45,127 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-02 20:08:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:45,500 INFO L93 Difference]: Finished difference Result 400 states and 520 transitions. [2022-11-02 20:08:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 235 [2022-11-02 20:08:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:45,506 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:08:45,507 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 20:08:45,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:45,508 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 41 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:45,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1339 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:08:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 20:08:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 20:08:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 148 states have internal predecessors, (173), 65 states have call successors, (65), 24 states have call predecessors, (65), 23 states have return successors, (67), 64 states have call predecessors, (67), 64 states have call successors, (67) [2022-11-02 20:08:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 305 transitions. [2022-11-02 20:08:45,527 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 305 transitions. Word has length 235 [2022-11-02 20:08:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:45,528 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 305 transitions. [2022-11-02 20:08:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-02 20:08:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 305 transitions. [2022-11-02 20:08:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-02 20:08:45,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:45,531 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-11-02 20:08:45,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:45,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:45,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1406928010, now seen corresponding path program 1 times [2022-11-02 20:08:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:45,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062634940] [2022-11-02 20:08:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:45,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:45,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:45,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:45,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:08:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:47,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:47,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 243 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-02 20:08:50,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:52,390 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:08:52,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 [2022-11-02 20:08:52,413 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-02 20:08:52,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 12 [2022-11-02 20:08:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-02 20:08:52,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062634940] [2022-11-02 20:08:52,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062634940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:52,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:52,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2022-11-02 20:08:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543637691] [2022-11-02 20:08:52,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:52,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:08:52,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:52,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:08:52,605 INFO L87 Difference]: Start difference. First operand 237 states and 305 transitions. Second operand has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) [2022-11-02 20:08:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:59,792 INFO L93 Difference]: Finished difference Result 405 states and 518 transitions. [2022-11-02 20:08:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:08:59,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) Word has length 235 [2022-11-02 20:08:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:59,798 INFO L225 Difference]: With dead ends: 405 [2022-11-02 20:08:59,798 INFO L226 Difference]: Without dead ends: 256 [2022-11-02 20:08:59,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:08:59,802 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 43 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:59,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 2973 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 559 Invalid, 0 Unknown, 71 Unchecked, 6.1s Time] [2022-11-02 20:08:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-02 20:08:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 248. [2022-11-02 20:08:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 155 states have (on average 1.1612903225806452) internal successors, (180), 156 states have internal predecessors, (180), 66 states have call successors, (66), 26 states have call predecessors, (66), 26 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-11-02 20:08:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 313 transitions. [2022-11-02 20:08:59,828 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 313 transitions. Word has length 235 [2022-11-02 20:08:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:59,829 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 313 transitions. [2022-11-02 20:08:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) [2022-11-02 20:08:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 313 transitions. [2022-11-02 20:08:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-02 20:08:59,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:59,832 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:08:59,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:00,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:00,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:00,053 INFO L85 PathProgramCache]: Analyzing trace with hash 759558577, now seen corresponding path program 1 times [2022-11-02 20:09:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:00,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307437798] [2022-11-02 20:09:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:00,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:00,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:00,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:09:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:02,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:09:02,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:05,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-02 20:09:05,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-02 20:09:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 241 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-02 20:09:05,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:06,723 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:09:06,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 [2022-11-02 20:09:06,752 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-02 20:09:06,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 12 [2022-11-02 20:09:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-02 20:09:06,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:06,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307437798] [2022-11-02 20:09:06,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307437798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:06,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:06,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 18 [2022-11-02 20:09:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025695589] [2022-11-02 20:09:06,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:09:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:06,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:09:06,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:09:06,925 INFO L87 Difference]: Start difference. First operand 248 states and 313 transitions. Second operand has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-02 20:09:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:11,360 INFO L93 Difference]: Finished difference Result 407 states and 514 transitions. [2022-11-02 20:09:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:09:11,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) Word has length 246 [2022-11-02 20:09:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:11,368 INFO L225 Difference]: With dead ends: 407 [2022-11-02 20:09:11,368 INFO L226 Difference]: Without dead ends: 258 [2022-11-02 20:09:11,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:09:11,371 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 61 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:11,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3074 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 426 Invalid, 0 Unknown, 68 Unchecked, 3.2s Time] [2022-11-02 20:09:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-02 20:09:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2022-11-02 20:09:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 159 states have (on average 1.1572327044025157) internal successors, (184), 161 states have internal predecessors, (184), 66 states have call successors, (66), 27 states have call predecessors, (66), 28 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2022-11-02 20:09:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 319 transitions. [2022-11-02 20:09:11,396 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 319 transitions. Word has length 246 [2022-11-02 20:09:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:11,397 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 319 transitions. [2022-11-02 20:09:11,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-02 20:09:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 319 transitions. [2022-11-02 20:09:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-02 20:09:11,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:11,401 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:09:11,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:11,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:11,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1235109588, now seen corresponding path program 1 times [2022-11-02 20:09:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227212219] [2022-11-02 20:09:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:11,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:11,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:09:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:14,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:09:14,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-02 20:09:14,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:14,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:14,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227212219] [2022-11-02 20:09:14,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227212219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:14,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:14,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80144534] [2022-11-02 20:09:14,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:14,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:14,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:14,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:14,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:14,298 INFO L87 Difference]: Start difference. First operand 254 states and 319 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-02 20:09:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:14,401 INFO L93 Difference]: Finished difference Result 264 states and 329 transitions. [2022-11-02 20:09:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:14,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 251 [2022-11-02 20:09:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:14,405 INFO L225 Difference]: With dead ends: 264 [2022-11-02 20:09:14,405 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:09:14,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:09:14,406 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 7 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:14,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1149 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:09:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2022-11-02 20:09:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 162 states have (on average 1.154320987654321) internal successors, (187), 165 states have internal predecessors, (187), 67 states have call successors, (67), 28 states have call predecessors, (67), 29 states have return successors, (70), 65 states have call predecessors, (70), 66 states have call successors, (70) [2022-11-02 20:09:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 324 transitions. [2022-11-02 20:09:14,429 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 324 transitions. Word has length 251 [2022-11-02 20:09:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:14,430 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 324 transitions. [2022-11-02 20:09:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-02 20:09:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 324 transitions. [2022-11-02 20:09:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-02 20:09:14,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:14,433 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:09:14,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:09:14,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:14,647 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1233262546, now seen corresponding path program 1 times [2022-11-02 20:09:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:14,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657375926] [2022-11-02 20:09:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:14,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:14,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:14,652 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:14,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:09:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:17,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:09:17,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-02 20:09:17,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:17,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657375926] [2022-11-02 20:09:17,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657375926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:17,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:17,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527100617] [2022-11-02 20:09:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:17,437 INFO L87 Difference]: Start difference. First operand 259 states and 324 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-02 20:09:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:17,524 INFO L93 Difference]: Finished difference Result 267 states and 331 transitions. [2022-11-02 20:09:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 251 [2022-11-02 20:09:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:17,528 INFO L225 Difference]: With dead ends: 267 [2022-11-02 20:09:17,528 INFO L226 Difference]: Without dead ends: 265 [2022-11-02 20:09:17,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:09:17,530 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 7 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:17,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1145 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-02 20:09:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 258. [2022-11-02 20:09:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 162 states have (on average 1.154320987654321) internal successors, (187), 164 states have internal predecessors, (187), 66 states have call successors, (66), 28 states have call predecessors, (66), 29 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2022-11-02 20:09:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2022-11-02 20:09:17,555 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 251 [2022-11-02 20:09:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:17,556 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2022-11-02 20:09:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-02 20:09:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2022-11-02 20:09:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-02 20:09:17,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:17,560 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-02 20:09:17,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:17,771 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash -727178982, now seen corresponding path program 1 times [2022-11-02 20:09:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:17,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138708539] [2022-11-02 20:09:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:17,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:17,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:17,775 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:17,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:09:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:20,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:20,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-02 20:09:20,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:20,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138708539] [2022-11-02 20:09:20,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138708539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164746126] [2022-11-02 20:09:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:20,684 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:09:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:20,897 INFO L93 Difference]: Finished difference Result 337 states and 417 transitions. [2022-11-02 20:09:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:09:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 258 [2022-11-02 20:09:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:20,902 INFO L225 Difference]: With dead ends: 337 [2022-11-02 20:09:20,902 INFO L226 Difference]: Without dead ends: 258 [2022-11-02 20:09:20,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:20,904 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 31 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:20,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 824 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:09:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-02 20:09:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-11-02 20:09:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 164 states have internal predecessors, (185), 66 states have call successors, (66), 28 states have call predecessors, (66), 29 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2022-11-02 20:09:20,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 320 transitions. [2022-11-02 20:09:20,948 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 320 transitions. Word has length 258 [2022-11-02 20:09:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:20,949 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 320 transitions. [2022-11-02 20:09:20,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:09:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 320 transitions. [2022-11-02 20:09:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-02 20:09:20,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:20,952 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-02 20:09:21,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-02 20:09:21,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:21,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1573643608, now seen corresponding path program 1 times [2022-11-02 20:09:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:21,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125937945] [2022-11-02 20:09:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:21,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:21,171 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:21,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:09:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:23,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:09:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-02 20:09:23,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:23,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:23,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125937945] [2022-11-02 20:09:23,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125937945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:23,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:23,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45890199] [2022-11-02 20:09:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:23,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:23,792 INFO L87 Difference]: Start difference. First operand 258 states and 320 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:09:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:23,871 INFO L93 Difference]: Finished difference Result 340 states and 421 transitions. [2022-11-02 20:09:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 258 [2022-11-02 20:09:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:23,875 INFO L225 Difference]: With dead ends: 340 [2022-11-02 20:09:23,875 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 20:09:23,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:23,877 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 3 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1153 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 20:09:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 262. [2022-11-02 20:09:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 165 states have (on average 1.1393939393939394) internal successors, (188), 167 states have internal predecessors, (188), 66 states have call successors, (66), 28 states have call predecessors, (66), 30 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-02 20:09:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2022-11-02 20:09:23,901 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 258 [2022-11-02 20:09:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:23,902 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2022-11-02 20:09:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:09:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2022-11-02 20:09:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-02 20:09:23,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:23,905 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-02 20:09:23,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:24,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:24,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash 986837594, now seen corresponding path program 1 times [2022-11-02 20:09:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:24,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988601705] [2022-11-02 20:09:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:24,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:24,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:24,127 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:24,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d53dec-e801-4091-b2da-25ec92c9d1f0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process