./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa --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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:19:21,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:19:21,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:19:21,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:19:21,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:19:21,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:19:21,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:19:21,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:19:21,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:19:21,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:19:21,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:19:21,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:19:21,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:19:21,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:19:21,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:19:21,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:19:21,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:19:21,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:19:21,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:19:21,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:19:21,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:19:21,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:19:21,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:19:21,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:19:21,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:19:21,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:19:21,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:19:21,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:19:21,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:19:21,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:19:21,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:19:21,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:19:21,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:19:21,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:19:21,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:19:21,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:19:21,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:19:21,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:19:21,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:19:21,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:19:21,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:19:21,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 01:19:21,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:19:21,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:19:21,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:19:21,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:19:21,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:19:21,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:19:21,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:19:21,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:19:21,686 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:19:21,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:19:21,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:19:21,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:19:21,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:19:21,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:19:21,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:19:21,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:19:21,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:19:21,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:19:21,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:19:21,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:19:21,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:19:21,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:19:21,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:19:21,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:19:21,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:19:21,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:19:21,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:19:21,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:19:21,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:19:21,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:19:21,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:19:21,690 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-07 01:19:21,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:19:21,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:19:21,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:19:21,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:19:21,883 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:19:21,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-07 01:19:21,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/95365c429/f75562e802c74fc2926590a80a73c356/FLAGa2a7024ce [2021-12-07 01:19:22,493 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:19:22,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-07 01:19:22,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/95365c429/f75562e802c74fc2926590a80a73c356/FLAGa2a7024ce [2021-12-07 01:19:22,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/95365c429/f75562e802c74fc2926590a80a73c356 [2021-12-07 01:19:22,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:19:22,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:19:22,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:19:22,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:19:22,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:19:22,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:19:22" (1/1) ... [2021-12-07 01:19:22,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bc322a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:22, skipping insertion in model container [2021-12-07 01:19:22,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:19:22" (1/1) ... [2021-12-07 01:19:22,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:19:23,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:19:23,257 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-07 01:19:23,263 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-07 01:19:24,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:19:24,414 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:19:24,415 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:19:24,415 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:19:24,416 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:19:24,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:19:24,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:19:24,418 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:19:24,418 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:19:24,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:19:24,573 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:19:24,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,803 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:19:24,903 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:19:24,913 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-07 01:19:24,914 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-07 01:19:24,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:24,963 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:19:24,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:19:24,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:19:24,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:19:24,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:19:24,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:19:24,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:19:24,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:19:24,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:19:24,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:19:24,979 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:19:25,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:25,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:19:25,285 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:19:25,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25 WrapperNode [2021-12-07 01:19:25,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:19:25,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:19:25,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:19:25,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:19:25,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,437 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 945 [2021-12-07 01:19:25,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:19:25,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:19:25,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:19:25,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:19:25,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:19:25,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:19:25,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:19:25,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:19:25,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (1/1) ... [2021-12-07 01:19:25,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:19:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:19:25,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:19:25,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:19:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-07 01:19:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 01:19:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:19:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-07 01:19:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:19:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:19:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 01:19:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-07 01:19:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 01:19:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-07 01:19:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-07 01:19:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-07 01:19:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-07 01:19:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-07 01:19:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-07 01:19:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-07 01:19:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-07 01:19:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-07 01:19:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-07 01:19:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-07 01:19:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-07 01:19:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-07 01:19:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-07 01:19:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-07 01:19:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-07 01:19:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 01:19:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 01:19:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-07 01:19:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-07 01:19:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 01:19:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-07 01:19:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-07 01:19:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-07 01:19:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-07 01:19:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 01:19:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 01:19:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-07 01:19:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-07 01:19:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-07 01:19:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-07 01:19:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:19:25,823 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:19:25,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:19:25,919 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-07 01:19:25,976 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 01:19:26,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-07 01:19:26,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-07 01:19:26,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 01:19:26,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-07 01:19:26,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-07 01:19:26,677 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:19:26,686 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:19:26,686 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-07 01:19:26,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:19:26 BoogieIcfgContainer [2021-12-07 01:19:26,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:19:26,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:19:26,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:19:26,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:19:26,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:19:22" (1/3) ... [2021-12-07 01:19:26,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5f618a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:19:26, skipping insertion in model container [2021-12-07 01:19:26,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:25" (2/3) ... [2021-12-07 01:19:26,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5f618a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:19:26, skipping insertion in model container [2021-12-07 01:19:26,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:19:26" (3/3) ... [2021-12-07 01:19:26,696 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-07 01:19:26,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:19:26,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:19:26,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:19:26,757 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:19:26,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:19:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 177 states have internal predecessors, (223), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-07 01:19:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-07 01:19:26,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:26,802 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:26,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2061328642, now seen corresponding path program 1 times [2021-12-07 01:19:26,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:19:26,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406134561] [2021-12-07 01:19:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:26,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:19:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:19:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:19:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:19:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 01:19:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 01:19:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 01:19:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:19:27,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:19:27,394 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig$NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck$TraceCheckLock@1a08b7aa at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lockAndPrepareSolverForTraceCheck(TraceCheck.java:493) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:294) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) ... 31 more [2021-12-07 01:19:27,398 INFO L158 Benchmark]: Toolchain (without parser) took 4434.14ms. Allocated memory was 94.4MB in the beginning and 172.0MB in the end (delta: 77.6MB). Free memory was 62.4MB in the beginning and 54.5MB in the end (delta: 7.9MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,398 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:19:27,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2321.37ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 62.2MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.49ms. Allocated memory is still 142.6MB. Free memory was 60.0MB in the beginning and 85.0MB in the end (delta: -24.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,400 INFO L158 Benchmark]: Boogie Preprocessor took 84.74ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 76.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,400 INFO L158 Benchmark]: RCFGBuilder took 1165.61ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 76.6MB in the beginning and 79.5MB in the end (delta: -2.9MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,401 INFO L158 Benchmark]: TraceAbstraction took 706.08ms. Allocated memory is still 172.0MB. Free memory was 78.5MB in the beginning and 54.5MB in the end (delta: 24.0MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2021-12-07 01:19:27,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2321.37ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 62.2MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 151.49ms. Allocated memory is still 142.6MB. Free memory was 60.0MB in the beginning and 85.0MB in the end (delta: -24.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.74ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 76.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1165.61ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 76.6MB in the beginning and 79.5MB in the end (delta: -2.9MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * TraceAbstraction took 706.08ms. Allocated memory is still 172.0MB. Free memory was 78.5MB in the beginning and 54.5MB in the end (delta: 24.0MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-07 01:19:27,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa --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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:19:28,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:19:28,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:19:28,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:19:28,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:19:28,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:19:28,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:19:29,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:19:29,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:19:29,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:19:29,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:19:29,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:19:29,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:19:29,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:19:29,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:19:29,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:19:29,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:19:29,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:19:29,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:19:29,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:19:29,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:19:29,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:19:29,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:19:29,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:19:29,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:19:29,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:19:29,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:19:29,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:19:29,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:19:29,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:19:29,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:19:29,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:19:29,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:19:29,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:19:29,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:19:29,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:19:29,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:19:29,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:19:29,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:19:29,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:19:29,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:19:29,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-07 01:19:29,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:19:29,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:19:29,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:19:29,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:19:29,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:19:29,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:19:29,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:19:29,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:19:29,067 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:19:29,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:19:29,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:19:29,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:19:29,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:19:29,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:19:29,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 01:19:29,069 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 01:19:29,069 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 01:19:29,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:19:29,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:19:29,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:19:29,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:19:29,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:19:29,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:19:29,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:19:29,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:19:29,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:19:29,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:19:29,071 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 01:19:29,071 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 01:19:29,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:19:29,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:19:29,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:19:29,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:19:29,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 01:19:29,073 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-07 01:19:29,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:19:29,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:19:29,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:19:29,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:19:29,330 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:19:29,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-07 01:19:29,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/ffae12b0b/d60b8e4cbd10410b9a350e5a8a31a17f/FLAG4b39c1344 [2021-12-07 01:19:29,935 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:19:29,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-07 01:19:29,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/ffae12b0b/d60b8e4cbd10410b9a350e5a8a31a17f/FLAG4b39c1344 [2021-12-07 01:19:30,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/data/ffae12b0b/d60b8e4cbd10410b9a350e5a8a31a17f [2021-12-07 01:19:30,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:19:30,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:19:30,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:19:30,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:19:30,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:19:30,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:19:30" (1/1) ... [2021-12-07 01:19:30,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185fa3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:30, skipping insertion in model container [2021-12-07 01:19:30,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:19:30" (1/1) ... [2021-12-07 01:19:30,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:19:30,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:19:30,727 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-07 01:19:30,732 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-07 01:19:31,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,547 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:31,905 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:19:31,906 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:19:31,907 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:19:31,908 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:19:31,909 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:19:31,909 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:19:31,910 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:19:31,910 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:19:31,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:19:31,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:19:32,055 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:19:32,291 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,309 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,309 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,324 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:19:32,387 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-07 01:19:32,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:19:32,465 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-07 01:19:32,466 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-07 01:19:32,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,536 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:19:32,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:19:32,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:19:32,538 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:19:32,538 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:19:32,538 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:19:32,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:19:32,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:19:32,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:19:32,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:19:32,553 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:19:32,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:19:32,680 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:19:32,689 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-07 01:19:32,690 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_5673b7bd-6869-4b3c-85ba-6de56039b2c4/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-07 01:19:32,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:19:32,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:19:32,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:19:32,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:19:32,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:19:32,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:19:32,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:19:32,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:19:32,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:19:32,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:19:32,749 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:19:32,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:19:32,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:19:33,126 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:19:33,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33 WrapperNode [2021-12-07 01:19:33,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:19:33,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:19:33,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:19:33,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:19:33,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,262 INFO L137 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 70, calls inlined = 17, statements flattened = 931 [2021-12-07 01:19:33,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:19:33,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:19:33,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:19:33,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:19:33,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:19:33,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:19:33,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:19:33,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:19:33,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (1/1) ... [2021-12-07 01:19:33,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:19:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:19:33,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:19:33,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-07 01:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-07 01:19:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-07 01:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 01:19:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 01:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:19:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-07 01:19:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:19:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 01:19:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 01:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-07 01:19:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 01:19:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-07 01:19:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-07 01:19:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-07 01:19:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-07 01:19:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-07 01:19:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-07 01:19:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-07 01:19:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-07 01:19:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-07 01:19:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-07 01:19:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-07 01:19:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-07 01:19:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-07 01:19:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-07 01:19:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-07 01:19:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-07 01:19:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-07 01:19:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 01:19:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-07 01:19:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-07 01:19:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-07 01:19:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-07 01:19:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-07 01:19:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 01:19:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 01:19:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-07 01:19:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-07 01:19:33,622 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:19:33,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:19:33,736 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-07 01:19:33,938 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 01:19:35,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-07 01:19:35,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-07 01:19:35,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 01:19:35,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-07 01:19:35,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-07 01:19:35,295 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:19:35,303 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:19:35,303 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-07 01:19:35,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:19:35 BoogieIcfgContainer [2021-12-07 01:19:35,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:19:35,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:19:35,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:19:35,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:19:35,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:19:30" (1/3) ... [2021-12-07 01:19:35,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a22ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:19:35, skipping insertion in model container [2021-12-07 01:19:35,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:19:33" (2/3) ... [2021-12-07 01:19:35,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a22ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:19:35, skipping insertion in model container [2021-12-07 01:19:35,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:19:35" (3/3) ... [2021-12-07 01:19:35,310 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-07 01:19:35,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:19:35,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:19:35,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:19:35,355 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:19:35,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:19:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-07 01:19:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-07 01:19:35,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:35,390 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:35,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 448295814, now seen corresponding path program 1 times [2021-12-07 01:19:35,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403739075] [2021-12-07 01:19:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:35,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:35,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 01:19:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:36,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 01:19:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2021-12-07 01:19:36,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:36,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:36,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403739075] [2021-12-07 01:19:36,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403739075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:36,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:36,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:19:36,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544662218] [2021-12-07 01:19:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:36,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:19:36,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:19:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:19:36,996 INFO L87 Difference]: Start difference. First operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 01:19:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:37,041 INFO L93 Difference]: Finished difference Result 548 states and 807 transitions. [2021-12-07 01:19:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:19:37,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2021-12-07 01:19:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:37,051 INFO L225 Difference]: With dead ends: 548 [2021-12-07 01:19:37,052 INFO L226 Difference]: Without dead ends: 270 [2021-12-07 01:19:37,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:19:37,059 INFO L933 BasicCegarLoop]: 370 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, 370 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 [2021-12-07 01:19:37,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:19:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-07 01:19:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-12-07 01:19:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.2125) internal successors, (194), 161 states have internal predecessors, (194), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-07 01:19:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 365 transitions. [2021-12-07 01:19:37,109 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 365 transitions. Word has length 281 [2021-12-07 01:19:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:37,110 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 365 transitions. [2021-12-07 01:19:37,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 01:19:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 365 transitions. [2021-12-07 01:19:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-07 01:19:37,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:37,115 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:37,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:19:37,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:37,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:37,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1090035532, now seen corresponding path program 1 times [2021-12-07 01:19:37,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:37,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358229707] [2021-12-07 01:19:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:37,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:37,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:37,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 01:19:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:38,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:19:38,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-12-07 01:19:38,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:38,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:38,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358229707] [2021-12-07 01:19:38,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358229707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:38,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:19:38,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125232489] [2021-12-07 01:19:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:38,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:19:38,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:19:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:19:38,795 INFO L87 Difference]: Start difference. First operand 270 states and 365 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-07 01:19:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:38,864 INFO L93 Difference]: Finished difference Result 541 states and 737 transitions. [2021-12-07 01:19:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:19:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 281 [2021-12-07 01:19:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:38,868 INFO L225 Difference]: With dead ends: 541 [2021-12-07 01:19:38,868 INFO L226 Difference]: Without dead ends: 274 [2021-12-07 01:19:38,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:19:38,870 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:38,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1448 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:19:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-07 01:19:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-12-07 01:19:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 164 states have internal predecessors, (197), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-12-07 01:19:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 369 transitions. [2021-12-07 01:19:38,892 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 369 transitions. Word has length 281 [2021-12-07 01:19:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:38,893 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 369 transitions. [2021-12-07 01:19:38,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-07 01:19:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 369 transitions. [2021-12-07 01:19:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-07 01:19:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:38,898 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:38,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 01:19:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:39,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 224607552, now seen corresponding path program 1 times [2021-12-07 01:19:39,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806292014] [2021-12-07 01:19:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:39,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:39,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:39,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:39,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 01:19:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:39,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:19:39,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2021-12-07 01:19:40,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:40,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806292014] [2021-12-07 01:19:40,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806292014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:40,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:40,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:19:40,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900363723] [2021-12-07 01:19:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:19:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:19:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:19:40,238 INFO L87 Difference]: Start difference. First operand 274 states and 369 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:19:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:40,435 INFO L93 Difference]: Finished difference Result 548 states and 741 transitions. [2021-12-07 01:19:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:19:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 305 [2021-12-07 01:19:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:40,441 INFO L225 Difference]: With dead ends: 548 [2021-12-07 01:19:40,441 INFO L226 Difference]: Without dead ends: 276 [2021-12-07 01:19:40,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:19:40,444 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:40,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:19:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-07 01:19:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-12-07 01:19:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 166 states have internal predecessors, (198), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (87), 86 states have call predecessors, (87), 85 states have call successors, (87) [2021-12-07 01:19:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 371 transitions. [2021-12-07 01:19:40,468 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 371 transitions. Word has length 305 [2021-12-07 01:19:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:40,469 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 371 transitions. [2021-12-07 01:19:40,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:19:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 371 transitions. [2021-12-07 01:19:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-07 01:19:40,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:40,473 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:40,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 01:19:40,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:40,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash 947024628, now seen corresponding path program 1 times [2021-12-07 01:19:40,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:40,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553212813] [2021-12-07 01:19:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:40,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:40,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:40,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:40,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 01:19:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:41,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 01:19:41,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:42,088 INFO L388 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 [2021-12-07 01:19:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-07 01:19:42,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:42,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553212813] [2021-12-07 01:19:42,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553212813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:42,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:42,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 01:19:42,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792376849] [2021-12-07 01:19:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:42,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:19:42,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:19:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:19:42,922 INFO L87 Difference]: Start difference. First operand 276 states and 371 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-07 01:19:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:43,811 INFO L93 Difference]: Finished difference Result 560 states and 751 transitions. [2021-12-07 01:19:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:19:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) Word has length 315 [2021-12-07 01:19:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:43,815 INFO L225 Difference]: With dead ends: 560 [2021-12-07 01:19:43,815 INFO L226 Difference]: Without dead ends: 285 [2021-12-07 01:19:43,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:19:43,818 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 17 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:43,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2360 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 152 Unchecked, 0.8s Time] [2021-12-07 01:19:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-07 01:19:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-07 01:19:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 174 states have internal predecessors, (208), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (88), 86 states have call predecessors, (88), 85 states have call successors, (88) [2021-12-07 01:19:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2021-12-07 01:19:43,834 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 315 [2021-12-07 01:19:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:43,834 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2021-12-07 01:19:43,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-07 01:19:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2021-12-07 01:19:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-07 01:19:43,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:43,837 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:43,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-07 01:19:44,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:44,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 605345714, now seen corresponding path program 1 times [2021-12-07 01:19:44,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:44,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577849771] [2021-12-07 01:19:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:44,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:44,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:44,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:44,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 01:19:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:45,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:19:45,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-07 01:19:45,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:45,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:45,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577849771] [2021-12-07 01:19:45,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577849771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:45,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:45,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:19:45,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605760375] [2021-12-07 01:19:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:45,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:19:45,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:19:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:19:45,463 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-07 01:19:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:45,602 INFO L93 Difference]: Finished difference Result 564 states and 773 transitions. [2021-12-07 01:19:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:19:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 315 [2021-12-07 01:19:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:45,606 INFO L225 Difference]: With dead ends: 564 [2021-12-07 01:19:45,606 INFO L226 Difference]: Without dead ends: 287 [2021-12-07 01:19:45,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:19:45,607 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 61 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:45,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 978 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:19:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-07 01:19:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-12-07 01:19:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 175 states have internal predecessors, (208), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (103), 87 states have call predecessors, (103), 86 states have call successors, (103) [2021-12-07 01:19:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 398 transitions. [2021-12-07 01:19:45,621 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 398 transitions. Word has length 315 [2021-12-07 01:19:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:45,622 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 398 transitions. [2021-12-07 01:19:45,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-07 01:19:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 398 transitions. [2021-12-07 01:19:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-07 01:19:45,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:45,625 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:45,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-07 01:19:45,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:45,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1717919787, now seen corresponding path program 1 times [2021-12-07 01:19:45,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961690519] [2021-12-07 01:19:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:45,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:45,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:45,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:45,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 01:19:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:47,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 01:19:47,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:47,178 INFO L388 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 [2021-12-07 01:19:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-07 01:19:48,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:48,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:48,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961690519] [2021-12-07 01:19:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961690519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:48,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:48,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-07 01:19:48,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864403330] [2021-12-07 01:19:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:19:48,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:19:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:19:48,164 INFO L87 Difference]: Start difference. First operand 287 states and 398 transitions. Second operand has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-07 01:19:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:48,602 INFO L93 Difference]: Finished difference Result 575 states and 797 transitions. [2021-12-07 01:19:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:19:48,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) Word has length 321 [2021-12-07 01:19:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:48,605 INFO L225 Difference]: With dead ends: 575 [2021-12-07 01:19:48,605 INFO L226 Difference]: Without dead ends: 290 [2021-12-07 01:19:48,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:19:48,607 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 9 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2053 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 141 Unchecked, 0.4s Time] [2021-12-07 01:19:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-07 01:19:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-12-07 01:19:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 175 states have (on average 1.2) internal successors, (210), 177 states have internal predecessors, (210), 88 states have call successors, (88), 25 states have call predecessors, (88), 26 states have return successors, (104), 87 states have call predecessors, (104), 87 states have call successors, (104) [2021-12-07 01:19:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 402 transitions. [2021-12-07 01:19:48,620 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 402 transitions. Word has length 321 [2021-12-07 01:19:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:48,621 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 402 transitions. [2021-12-07 01:19:48,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-07 01:19:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 402 transitions. [2021-12-07 01:19:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-07 01:19:48,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:48,623 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:48,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 01:19:48,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:48,825 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 870325970, now seen corresponding path program 1 times [2021-12-07 01:19:48,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:48,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151390934] [2021-12-07 01:19:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:48,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:48,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:48,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 01:19:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:50,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:19:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-12-07 01:19:50,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:50,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:50,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151390934] [2021-12-07 01:19:50,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151390934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:50,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:50,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:19:50,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836452123] [2021-12-07 01:19:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:50,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:19:50,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:19:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:19:50,496 INFO L87 Difference]: Start difference. First operand 290 states and 402 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-07 01:19:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:50,668 INFO L93 Difference]: Finished difference Result 567 states and 789 transitions. [2021-12-07 01:19:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:19:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 326 [2021-12-07 01:19:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:50,671 INFO L225 Difference]: With dead ends: 567 [2021-12-07 01:19:50,671 INFO L226 Difference]: Without dead ends: 288 [2021-12-07 01:19:50,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:19:50,673 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:50,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:19:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-07 01:19:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-07 01:19:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (102), 86 states have call predecessors, (102), 87 states have call successors, (102) [2021-12-07 01:19:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 394 transitions. [2021-12-07 01:19:50,685 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 394 transitions. Word has length 326 [2021-12-07 01:19:50,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:50,685 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 394 transitions. [2021-12-07 01:19:50,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-07 01:19:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 394 transitions. [2021-12-07 01:19:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-07 01:19:50,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:50,688 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:50,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-07 01:19:50,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:50,890 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1951086534, now seen corresponding path program 1 times [2021-12-07 01:19:50,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:50,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581195773] [2021-12-07 01:19:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:50,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:50,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:50,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 01:19:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 01:19:52,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:53,000 INFO L388 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 [2021-12-07 01:19:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-07 01:19:53,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:53,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:53,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581195773] [2021-12-07 01:19:53,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581195773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:53,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:53,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 01:19:53,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973887018] [2021-12-07 01:19:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:19:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:53,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:19:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:19:53,646 INFO L87 Difference]: Start difference. First operand 284 states and 394 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-07 01:19:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:54,505 INFO L93 Difference]: Finished difference Result 541 states and 751 transitions. [2021-12-07 01:19:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:19:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) Word has length 336 [2021-12-07 01:19:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:54,509 INFO L225 Difference]: With dead ends: 541 [2021-12-07 01:19:54,509 INFO L226 Difference]: Without dead ends: 293 [2021-12-07 01:19:54,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:19:54,511 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 19 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:54,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1748 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 47 Unchecked, 0.8s Time] [2021-12-07 01:19:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-07 01:19:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-07 01:19:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 180 states have internal predecessors, (214), 88 states have call successors, (88), 26 states have call predecessors, (88), 25 states have return successors, (103), 86 states have call predecessors, (103), 87 states have call successors, (103) [2021-12-07 01:19:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 405 transitions. [2021-12-07 01:19:54,523 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 405 transitions. Word has length 336 [2021-12-07 01:19:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:54,524 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 405 transitions. [2021-12-07 01:19:54,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-07 01:19:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 405 transitions. [2021-12-07 01:19:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-07 01:19:54,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:54,526 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:54,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 01:19:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:54,728 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash 726440312, now seen corresponding path program 1 times [2021-12-07 01:19:54,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954099264] [2021-12-07 01:19:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:54,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:54,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 01:19:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:56,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:19:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-07 01:19:56,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:19:56,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:19:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954099264] [2021-12-07 01:19:56,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954099264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:19:56,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:19:56,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:19:56,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767724853] [2021-12-07 01:19:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:19:56,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:19:56,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:19:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:19:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:19:56,849 INFO L87 Difference]: Start difference. First operand 293 states and 405 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:19:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:56,989 INFO L93 Difference]: Finished difference Result 538 states and 747 transitions. [2021-12-07 01:19:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:19:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 336 [2021-12-07 01:19:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:56,993 INFO L225 Difference]: With dead ends: 538 [2021-12-07 01:19:56,993 INFO L226 Difference]: Without dead ends: 288 [2021-12-07 01:19:56,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:19:56,995 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 59 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:56,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 981 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:19:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-07 01:19:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-07 01:19:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 175 states have internal predecessors, (208), 88 states have call successors, (88), 26 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-07 01:19:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 395 transitions. [2021-12-07 01:19:57,012 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 395 transitions. Word has length 336 [2021-12-07 01:19:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:57,013 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 395 transitions. [2021-12-07 01:19:57,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:19:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 395 transitions. [2021-12-07 01:19:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-07 01:19:57,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:57,016 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:19:57,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 01:19:57,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:19:57,218 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1622214181, now seen corresponding path program 1 times [2021-12-07 01:19:57,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:19:57,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752221840] [2021-12-07 01:19:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:57,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:19:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:19:57,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:19:57,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 01:19:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 01:19:59,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:59,303 INFO L388 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 [2021-12-07 01:20:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-07 01:20:00,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:20:00,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752221840] [2021-12-07 01:20:00,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752221840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:00,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:00,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-07 01:20:00,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472686643] [2021-12-07 01:20:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:00,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:20:00,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:20:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:20:00,055 INFO L87 Difference]: Start difference. First operand 288 states and 395 transitions. Second operand has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-07 01:20:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:00,866 INFO L93 Difference]: Finished difference Result 542 states and 746 transitions. [2021-12-07 01:20:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:20:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) Word has length 342 [2021-12-07 01:20:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:00,869 INFO L225 Difference]: With dead ends: 542 [2021-12-07 01:20:00,869 INFO L226 Difference]: Without dead ends: 291 [2021-12-07 01:20:00,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:20:00,871 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 9 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:00,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2399 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 159 Unchecked, 0.7s Time] [2021-12-07 01:20:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-07 01:20:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 284. [2021-12-07 01:20:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-07 01:20:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-12-07 01:20:00,882 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 342 [2021-12-07 01:20:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:00,883 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-12-07 01:20:00,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-07 01:20:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-12-07 01:20:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-07 01:20:00,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:00,885 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:00,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-07 01:20:01,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:01,086 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1674881120, now seen corresponding path program 2 times [2021-12-07 01:20:01,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:01,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700964470] [2021-12-07 01:20:01,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:20:01,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:01,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:01,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 01:20:04,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:20:04,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:05,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:20:05,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2021-12-07 01:20:05,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:20:05,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:05,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700964470] [2021-12-07 01:20:05,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700964470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:05,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:05,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:20:05,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744011819] [2021-12-07 01:20:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:05,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:20:05,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:20:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:20:05,363 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:20:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:05,532 INFO L93 Difference]: Finished difference Result 487 states and 707 transitions. [2021-12-07 01:20:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:05,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 347 [2021-12-07 01:20:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:05,535 INFO L225 Difference]: With dead ends: 487 [2021-12-07 01:20:05,535 INFO L226 Difference]: Without dead ends: 290 [2021-12-07 01:20:05,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:20:05,536 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:05,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:20:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-07 01:20:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-12-07 01:20:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 175 states have internal predecessors, (206), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (114), 86 states have call predecessors, (114), 87 states have call successors, (114) [2021-12-07 01:20:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 408 transitions. [2021-12-07 01:20:05,548 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 408 transitions. Word has length 347 [2021-12-07 01:20:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:05,549 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 408 transitions. [2021-12-07 01:20:05,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:20:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 408 transitions. [2021-12-07 01:20:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-12-07 01:20:05,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:05,551 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:05,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 01:20:05,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:05,753 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1222453825, now seen corresponding path program 2 times [2021-12-07 01:20:05,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437827131] [2021-12-07 01:20:05,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:20:05,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:05,765 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 01:20:10,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:20:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:10,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:20:10,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-07 01:20:11,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:20:11,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437827131] [2021-12-07 01:20:11,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437827131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:11,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:11,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:20:11,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64787155] [2021-12-07 01:20:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:11,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:20:11,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:20:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:20:11,114 INFO L87 Difference]: Start difference. First operand 287 states and 408 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-07 01:20:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:12,320 INFO L93 Difference]: Finished difference Result 491 states and 730 transitions. [2021-12-07 01:20:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:20:12,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) Word has length 353 [2021-12-07 01:20:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:12,324 INFO L225 Difference]: With dead ends: 491 [2021-12-07 01:20:12,324 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:20:12,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:20:12,325 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 7 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:12,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1999 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 123 Unchecked, 1.0s Time] [2021-12-07 01:20:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:20:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2021-12-07 01:20:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 174 states have internal predecessors, (206), 87 states have call successors, (87), 25 states have call predecessors, (87), 25 states have return successors, (113), 86 states have call predecessors, (113), 86 states have call successors, (113) [2021-12-07 01:20:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 406 transitions. [2021-12-07 01:20:12,337 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 406 transitions. Word has length 353 [2021-12-07 01:20:12,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 406 transitions. [2021-12-07 01:20:12,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-07 01:20:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 406 transitions. [2021-12-07 01:20:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-07 01:20:12,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:12,340 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:12,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 01:20:12,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:12,541 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash 132787104, now seen corresponding path program 3 times [2021-12-07 01:20:12,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:12,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570558200] [2021-12-07 01:20:12,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:20:12,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:12,554 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:12,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 01:20:15,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:20:15,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:20:15,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-12-07 01:20:15,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:20:15,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570558200] [2021-12-07 01:20:15,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570558200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:15,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:15,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:20:15,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506333671] [2021-12-07 01:20:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:15,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:20:15,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:20:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:20:15,586 INFO L87 Difference]: Start difference. First operand 286 states and 406 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:20:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:15,772 INFO L93 Difference]: Finished difference Result 482 states and 703 transitions. [2021-12-07 01:20:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 358 [2021-12-07 01:20:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:15,775 INFO L225 Difference]: With dead ends: 482 [2021-12-07 01:20:15,775 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:20:15,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:20:15,776 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:15,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:20:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:20:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-07 01:20:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (123), 86 states have call predecessors, (123), 86 states have call successors, (123) [2021-12-07 01:20:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 418 transitions. [2021-12-07 01:20:15,788 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 418 transitions. Word has length 358 [2021-12-07 01:20:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:15,789 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 418 transitions. [2021-12-07 01:20:15,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:20:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 418 transitions. [2021-12-07 01:20:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-12-07 01:20:15,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:15,791 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:15,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-07 01:20:15,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:15,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2107400608, now seen corresponding path program 4 times [2021-12-07 01:20:15,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:15,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277158956] [2021-12-07 01:20:15,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:20:15,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:15,995 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:15,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 01:20:18,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:20:18,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:20:18,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2021-12-07 01:20:18,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:20:18,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277158956] [2021-12-07 01:20:18,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277158956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:18,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:18,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:20:18,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920471575] [2021-12-07 01:20:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:18,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:20:18,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:20:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:20:18,557 INFO L87 Difference]: Start difference. First operand 289 states and 418 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-07 01:20:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:18,751 INFO L93 Difference]: Finished difference Result 491 states and 727 transitions. [2021-12-07 01:20:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:18,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 369 [2021-12-07 01:20:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:18,754 INFO L225 Difference]: With dead ends: 491 [2021-12-07 01:20:18,754 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:20:18,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:20:18,755 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:18,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:20:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:20:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-07 01:20:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (122), 86 states have call predecessors, (122), 86 states have call successors, (122) [2021-12-07 01:20:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 417 transitions. [2021-12-07 01:20:18,767 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 417 transitions. Word has length 369 [2021-12-07 01:20:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:18,768 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 417 transitions. [2021-12-07 01:20:18,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-07 01:20:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 417 transitions. [2021-12-07 01:20:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-07 01:20:18,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:18,770 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:18,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 01:20:18,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:18,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash -133143286, now seen corresponding path program 5 times [2021-12-07 01:20:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693223858] [2021-12-07 01:20:18,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:20:18,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:18,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:18,979 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:18,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 01:20:35,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-07 01:20:35,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:35,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 01:20:35,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 491 proven. 11 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-12-07 01:20:37,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:38,633 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 01:20:38,633 INFO L388 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 [2021-12-07 01:20:38,646 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-12-07 01:20:38,646 INFO L388 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 [2021-12-07 01:20:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 34 proven. 40 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2021-12-07 01:20:38,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:38,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693223858] [2021-12-07 01:20:38,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693223858] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:38,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:20:38,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 19 [2021-12-07 01:20:38,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628951333] [2021-12-07 01:20:38,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:38,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 01:20:38,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:38,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 01:20:38,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-12-07 01:20:38,894 INFO L87 Difference]: Start difference. First operand 289 states and 417 transitions. Second operand has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 19 states have internal predecessors, (123), 6 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (53), 5 states have call predecessors, (53), 6 states have call successors, (53) [2021-12-07 01:20:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:43,735 INFO L93 Difference]: Finished difference Result 558 states and 833 transitions. [2021-12-07 01:20:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 01:20:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 19 states have internal predecessors, (123), 6 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (53), 5 states have call predecessors, (53), 6 states have call successors, (53) Word has length 380 [2021-12-07 01:20:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:43,739 INFO L225 Difference]: With dead ends: 558 [2021-12-07 01:20:43,739 INFO L226 Difference]: Without dead ends: 359 [2021-12-07 01:20:43,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 734 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:20:43,740 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 68 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 509 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:43,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 3699 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 920 Invalid, 0 Unknown, 509 Unchecked, 3.7s Time] [2021-12-07 01:20:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-07 01:20:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 314. [2021-12-07 01:20:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 197 states have internal predecessors, (232), 89 states have call successors, (89), 29 states have call predecessors, (89), 30 states have return successors, (126), 87 states have call predecessors, (126), 88 states have call successors, (126) [2021-12-07 01:20:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 447 transitions. [2021-12-07 01:20:43,756 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 447 transitions. Word has length 380 [2021-12-07 01:20:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:43,756 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 447 transitions. [2021-12-07 01:20:43,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 19 states have internal predecessors, (123), 6 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (53), 5 states have call predecessors, (53), 6 states have call successors, (53) [2021-12-07 01:20:43,756 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 447 transitions. [2021-12-07 01:20:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-07 01:20:43,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:43,759 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:20:43,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-07 01:20:43,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:43,960 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1819323124, now seen corresponding path program 2 times [2021-12-07 01:20:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302067845] [2021-12-07 01:20:43,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:20:43,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:43,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:43,973 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:43,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 01:20:48,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:20:48,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:48,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 01:20:48,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 417 proven. 25 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-12-07 01:20:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:52,580 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 01:20:52,581 INFO L388 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 [2021-12-07 01:20:52,594 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-12-07 01:20:52,594 INFO L388 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 [2021-12-07 01:20:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 46 proven. 28 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2021-12-07 01:20:52,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:52,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302067845] [2021-12-07 01:20:52,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302067845] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:52,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:20:52,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 19 [2021-12-07 01:20:52,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375386818] [2021-12-07 01:20:52,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:52,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 01:20:52,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:52,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 01:20:52,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-12-07 01:20:52,837 INFO L87 Difference]: Start difference. First operand 314 states and 447 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 6 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2021-12-07 01:21:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:21:00,127 INFO L93 Difference]: Finished difference Result 446 states and 642 transitions. [2021-12-07 01:21:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 01:21:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 6 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) Word has length 380 [2021-12-07 01:21:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:21:00,130 INFO L225 Difference]: With dead ends: 446 [2021-12-07 01:21:00,130 INFO L226 Difference]: Without dead ends: 384 [2021-12-07 01:21:00,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 721 SyntacticMatches, 22 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 01:21:00,132 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 71 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:21:00,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 3380 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1399 Invalid, 0 Unknown, 192 Unchecked, 5.6s Time] [2021-12-07 01:21:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-07 01:21:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 325. [2021-12-07 01:21:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 206 states have internal predecessors, (243), 89 states have call successors, (89), 31 states have call predecessors, (89), 32 states have return successors, (125), 87 states have call predecessors, (125), 88 states have call successors, (125) [2021-12-07 01:21:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 457 transitions. [2021-12-07 01:21:00,148 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 457 transitions. Word has length 380 [2021-12-07 01:21:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:21:00,148 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 457 transitions. [2021-12-07 01:21:00,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 6 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2021-12-07 01:21:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 457 transitions. [2021-12-07 01:21:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-07 01:21:00,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:21:00,150 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:21:00,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-07 01:21:00,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:21:00,352 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:21:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1561157686, now seen corresponding path program 3 times [2021-12-07 01:21:00,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:21:00,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155026196] [2021-12-07 01:21:00,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:21:00,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:21:00,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:21:00,365 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:21:00,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 01:21:08,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:21:08,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:21:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:21:08,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:21:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-12-07 01:21:08,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:21:08,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:21:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155026196] [2021-12-07 01:21:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155026196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:08,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:08,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:21:08,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092937420] [2021-12-07 01:21:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:21:08,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:21:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:21:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:21:08,888 INFO L87 Difference]: Start difference. First operand 325 states and 457 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:21:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:21:09,124 INFO L93 Difference]: Finished difference Result 558 states and 798 transitions. [2021-12-07 01:21:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:21:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 380 [2021-12-07 01:21:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:21:09,126 INFO L225 Difference]: With dead ends: 558 [2021-12-07 01:21:09,126 INFO L226 Difference]: Without dead ends: 322 [2021-12-07 01:21:09,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:21:09,128 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 99 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:21:09,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1601 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:21:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-12-07 01:21:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-12-07 01:21:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 201 states have (on average 1.1940298507462686) internal successors, (240), 203 states have internal predecessors, (240), 89 states have call successors, (89), 31 states have call predecessors, (89), 31 states have return successors, (113), 87 states have call predecessors, (113), 88 states have call successors, (113) [2021-12-07 01:21:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 442 transitions. [2021-12-07 01:21:09,141 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 442 transitions. Word has length 380 [2021-12-07 01:21:09,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:21:09,142 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 442 transitions. [2021-12-07 01:21:09,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-07 01:21:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 442 transitions. [2021-12-07 01:21:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-07 01:21:09,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:21:09,144 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-07 01:21:09,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-07 01:21:09,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:21:09,346 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:21:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2061255924, now seen corresponding path program 1 times [2021-12-07 01:21:09,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:21:09,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182562959] [2021-12-07 01:21:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:09,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:21:09,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:21:09,359 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:21:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5673b7bd-6869-4b3c-85ba-6de56039b2c4/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 01:21:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-07 01:21:15,316 INFO L286 TraceCheckSpWp]: Computing forward predicates...