./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF --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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:39:56,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:39:56,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:39:56,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:39:56,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:39:56,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:39:56,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:39:56,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:39:56,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:39:56,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:39:56,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:39:56,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:39:56,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:39:56,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:39:56,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:39:56,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:39:56,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:39:56,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:39:56,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:39:56,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:39:56,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:39:56,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:39:56,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:39:56,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:39:56,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:39:56,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:39:56,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:39:56,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:39:56,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:39:56,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:39:56,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:39:56,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:39:56,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:39:56,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:39:56,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:39:56,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:39:56,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:39:56,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:39:56,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:39:56,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:39:56,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:39:56,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:39:56,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:39:56,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:39:56,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:39:56,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:39:56,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:39:56,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:39:56,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:39:56,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:39:56,978 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:39:56,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:39:56,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:39:56,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:39:56,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:39:56,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:39:56,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:39:56,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:39:56,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:39:56,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:39:56,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:39:56,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:39:56,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:39:56,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:39:56,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:39:56,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:39:56,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:39:56,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:39:56,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:39:56,983 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:39:56,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:39:56,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:39:56,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:39:56,984 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-20 07:39:57,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:39:57,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:39:57,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:39:57,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:39:57,337 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:39:57,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-20 07:39:57,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/2c9487880/4a52fe4be30441f491ae04b139d114d1/FLAGc42fd229c [2021-11-20 07:39:58,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:39:58,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-20 07:39:58,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/2c9487880/4a52fe4be30441f491ae04b139d114d1/FLAGc42fd229c [2021-11-20 07:39:58,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/2c9487880/4a52fe4be30441f491ae04b139d114d1 [2021-11-20 07:39:58,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:39:58,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:39:58,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:39:58,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:39:58,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:39:58,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:58" (1/1) ... [2021-11-20 07:39:58,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490d0f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:58, skipping insertion in model container [2021-11-20 07:39:58,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:58" (1/1) ... [2021-11-20 07:39:58,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:39:59,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:39:59,449 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-20 07:39:59,459 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-20 07:40:00,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,286 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,309 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,310 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,550 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:40:00,552 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:40:00,562 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:40:00,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:40:00,568 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:40:00,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:40:00,574 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:40:00,577 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:40:00,581 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:40:00,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:40:00,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:00,731 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:40:00,765 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-20 07:40:00,773 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-20 07:40:00,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:00,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:40:00,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:40:00,970 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:40:00,971 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:40:00,973 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:40:00,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:40:00,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:40:00,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:40:00,976 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:40:00,977 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:40:01,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:01,307 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:40:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01 WrapperNode [2021-11-20 07:40:01,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:01,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:01,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:40:01,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:40:01,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,501 INFO L137 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-11-20 07:40:01,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:01,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:40:01,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:40:01,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:40:01,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:40:01,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:40:01,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:40:01,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:40:01,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (1/1) ... [2021-11-20 07:40:01,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:01,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:01,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:40:01,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:40:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:40:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:40:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:40:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:40:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:40:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:40:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:40:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:40:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:40:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:40:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-20 07:40:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-20 07:40:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 07:40:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 07:40:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:40:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:40:01,980 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:40:01,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:40:02,338 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:40:02,376 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:40:02,376 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:40:02,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:02 BoogieIcfgContainer [2021-11-20 07:40:02,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:40:02,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:40:02,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:40:02,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:40:02,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:39:58" (1/3) ... [2021-11-20 07:40:02,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2164e50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:02, skipping insertion in model container [2021-11-20 07:40:02,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:01" (2/3) ... [2021-11-20 07:40:02,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2164e50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:02, skipping insertion in model container [2021-11-20 07:40:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:02" (3/3) ... [2021-11-20 07:40:02,393 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-20 07:40:02,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:40:02,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:40:02,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:40:02,473 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 [2021-11-20 07:40:02,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:40:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 07:40:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:40:02,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:02,505 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:02,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-11-20 07:40:02,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:02,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422513762] [2021-11-20 07:40:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:02,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:40:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:40:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:40:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:40:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 07:40:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-20 07:40:03,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:40:03,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422513762] [2021-11-20 07:40:03,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422513762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:40:03,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:40:03,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:40:03,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968745238] [2021-11-20 07:40:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:03,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:40:03,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:40:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:40:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:03,184 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:40:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:03,224 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-11-20 07:40:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:40:03,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-20 07:40:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:03,236 INFO L225 Difference]: With dead ends: 117 [2021-11-20 07:40:03,236 INFO L226 Difference]: Without dead ends: 52 [2021-11-20 07:40:03,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:03,246 INFO L933 BasicCegarLoop]: 75 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, 75 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 [2021-11-20 07:40:03,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:40:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-20 07:40:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-20 07:40:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-20 07:40:03,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-11-20 07:40:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:03,325 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-20 07:40:03,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:40:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-20 07:40:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:40:03,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:03,329 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:03,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:40:03,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-11-20 07:40:03,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:03,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942851898] [2021-11-20 07:40:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:03,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:40:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:40:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:40:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:40:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 07:40:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:03,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:40:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942851898] [2021-11-20 07:40:03,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942851898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:40:03,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250144756] [2021-11-20 07:40:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:03,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:40:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:03,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:40:03,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:40:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:04,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 07:40:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:40:04,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:05,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250144756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:05,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:40:05,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-11-20 07:40:05,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362982894] [2021-11-20 07:40:05,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:40:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:40:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:40:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:40:05,287 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 07:40:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:05,577 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-20 07:40:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:40:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2021-11-20 07:40:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:05,585 INFO L225 Difference]: With dead ends: 58 [2021-11-20 07:40:05,585 INFO L226 Difference]: Without dead ends: 56 [2021-11-20 07:40:05,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:40:05,587 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:05,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:40:05,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-20 07:40:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-20 07:40:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-11-20 07:40:05,600 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-11-20 07:40:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:05,602 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-11-20 07:40:05,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 07:40:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-11-20 07:40:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:40:05,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:05,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-20 07:40:05,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:05,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:40:05,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-11-20 07:40:05,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:05,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946841347] [2021-11-20 07:40:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:05,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:40:05,877 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:40:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:40:05,996 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:40:05,996 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:40:05,997 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:40:05,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:40:06,005 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 07:40:06,009 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:40:06,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:40:06 BoogieIcfgContainer [2021-11-20 07:40:06,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:40:06,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:40:06,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:40:06,065 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:40:06,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:02" (3/4) ... [2021-11-20 07:40:06,069 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:40:06,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:40:06,069 INFO L158 Benchmark]: Toolchain (without parser) took 7217.89ms. Allocated memory was 88.1MB in the beginning and 136.3MB in the end (delta: 48.2MB). Free memory was 61.5MB in the beginning and 93.4MB in the end (delta: -31.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,072 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:40:06,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2454.11ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 61.2MB in the beginning and 61.5MB in the end (delta: -333.9kB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 192.46ms. Allocated memory is still 111.1MB. Free memory was 61.5MB in the beginning and 57.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,079 INFO L158 Benchmark]: Boogie Preprocessor took 63.36ms. Allocated memory is still 111.1MB. Free memory was 57.3MB in the beginning and 55.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,079 INFO L158 Benchmark]: RCFGBuilder took 812.14ms. Allocated memory is still 111.1MB. Free memory was 55.2MB in the beginning and 72.1MB in the end (delta: -16.9MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,079 INFO L158 Benchmark]: TraceAbstraction took 3683.30ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 72.1MB in the beginning and 93.4MB in the end (delta: -21.3MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2021-11-20 07:40:06,080 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 136.3MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:40:06,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2454.11ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 61.2MB in the beginning and 61.5MB in the end (delta: -333.9kB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 192.46ms. Allocated memory is still 111.1MB. Free memory was 61.5MB in the beginning and 57.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.36ms. Allocated memory is still 111.1MB. Free memory was 57.3MB in the beginning and 55.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 812.14ms. Allocated memory is still 111.1MB. Free memory was 55.2MB in the beginning and 72.1MB in the end (delta: -16.9MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3683.30ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 72.1MB in the beginning and 93.4MB in the end (delta: -21.3MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 136.3MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=0, s={6:0}] [L5871] COND FALSE !(n > 0) VAL [c=0, n=0, s={6:0}] [L5876] return s; VAL [c=0, n=0, s={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=0] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=0] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=0, num_uint64s=0] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 128 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 443 SizeOfPredicates, 13 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 124/160 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 07:40:06,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/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_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF --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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:40:08,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:40:08,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:40:08,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:40:08,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:40:08,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:40:08,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:40:08,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:40:08,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:40:08,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:40:08,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:40:08,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:40:08,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:40:08,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:40:08,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:40:08,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:40:08,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:40:08,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:40:08,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:40:08,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:40:08,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:40:08,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:40:08,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:40:08,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:40:08,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:40:08,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:40:08,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:40:08,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:40:08,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:40:08,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:40:08,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:40:08,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:40:08,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:40:08,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:40:08,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:40:08,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:40:08,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:40:08,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:40:08,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:40:08,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:40:08,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:40:08,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 07:40:08,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:40:08,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:40:08,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:40:08,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:40:08,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:40:08,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:40:08,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:40:08,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:40:08,810 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:40:08,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:40:08,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:40:08,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:40:08,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:40:08,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:40:08,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:40:08,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:40:08,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:40:08,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:40:08,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:40:08,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:40:08,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:40:08,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:40:08,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:40:08,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:08,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:40:08,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:40:08,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:40:08,814 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:40:08,815 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:40:08,815 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:40:08,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:40:08,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:40:08,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:40:08,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:40:08,816 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-20 07:40:09,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:40:09,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:40:09,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:40:09,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:40:09,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:40:09,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-20 07:40:09,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/52422f192/277f193585e7427380effc9c0b58d080/FLAGe52af6997 [2021-11-20 07:40:10,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:40:10,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-20 07:40:10,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/52422f192/277f193585e7427380effc9c0b58d080/FLAGe52af6997 [2021-11-20 07:40:10,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/data/52422f192/277f193585e7427380effc9c0b58d080 [2021-11-20 07:40:10,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:40:10,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:40:10,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:10,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:40:10,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:40:10,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:10" (1/1) ... [2021-11-20 07:40:10,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bd8cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:10, skipping insertion in model container [2021-11-20 07:40:10,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:10" (1/1) ... [2021-11-20 07:40:10,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:40:10,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:40:10,757 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-20 07:40:10,763 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-20 07:40:11,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,628 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:11,840 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:40:11,841 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:40:11,842 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:40:11,844 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:40:11,846 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:40:11,847 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:40:11,847 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:40:11,848 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:40:11,849 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:40:11,850 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:40:11,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:11,956 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:40:12,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:40:12,012 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-20 07:40:12,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-20 07:40:12,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:40:12,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:40:12,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:40:12,118 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:40:12,120 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:40:12,120 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:40:12,121 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:40:12,122 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:40:12,122 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:40:12,123 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:40:12,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:12,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:40:12,176 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-20 07:40:12,177 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_e6ba8f6d-5b17-404d-ab23-56025366a02d/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-20 07:40:12,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,257 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,258 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,258 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:40:12,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:40:12,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:40:12,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:40:12,298 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:40:12,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:40:12,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:40:12,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:40:12,301 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:40:12,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:40:12,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:40:12,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:12,531 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:40:12,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12 WrapperNode [2021-11-20 07:40:12,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:12,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:12,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:40:12,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:40:12,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,659 INFO L137 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-11-20 07:40:12,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:12,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:40:12,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:40:12,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:40:12,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:40:12,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:40:12,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:40:12,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:40:12,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (1/1) ... [2021-11-20 07:40:12,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:12,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:40:12,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:40:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:40:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:40:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:40:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:40:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:40:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:40:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:40:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 07:40:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:40:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:40:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:40:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 07:40:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 07:40:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-20 07:40:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-20 07:40:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 07:40:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 07:40:13,102 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:40:13,119 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:40:13,471 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:40:13,478 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:40:13,494 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:40:13,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:13 BoogieIcfgContainer [2021-11-20 07:40:13,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:40:13,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:40:13,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:40:13,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:40:13,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:40:10" (1/3) ... [2021-11-20 07:40:13,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2bae49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:13, skipping insertion in model container [2021-11-20 07:40:13,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:12" (2/3) ... [2021-11-20 07:40:13,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2bae49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:13, skipping insertion in model container [2021-11-20 07:40:13,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:13" (3/3) ... [2021-11-20 07:40:13,516 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-20 07:40:13,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:40:13,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:40:13,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:40:13,582 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 [2021-11-20 07:40:13,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:40:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 07:40:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:40:13,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:13,607 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:13,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-11-20 07:40:13,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120259609] [2021-11-20 07:40:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:13,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:13,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:13,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:13,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:40:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:13,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:40:13,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 07:40:13,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 07:40:14,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120259609] [2021-11-20 07:40:14,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120259609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:40:14,060 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:40:14,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:40:14,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204545716] [2021-11-20 07:40:14,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:14,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:40:14,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:40:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:14,130 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 07:40:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:14,179 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-11-20 07:40:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:40:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-11-20 07:40:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:14,190 INFO L225 Difference]: With dead ends: 117 [2021-11-20 07:40:14,190 INFO L226 Difference]: Without dead ends: 52 [2021-11-20 07:40:14,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:14,198 INFO L933 BasicCegarLoop]: 75 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, 75 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 [2021-11-20 07:40:14,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:40:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-20 07:40:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-20 07:40:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-20 07:40:14,243 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-11-20 07:40:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-20 07:40:14,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 07:40:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-20 07:40:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:40:14,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:14,247 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:14,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:14,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:14,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-11-20 07:40:14,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:14,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118791213] [2021-11-20 07:40:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:14,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:14,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:14,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:14,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:40:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:14,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:40:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:14,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:15,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:15,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118791213] [2021-11-20 07:40:15,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118791213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:15,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-20 07:40:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076030416] [2021-11-20 07:40:15,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:40:15,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:40:15,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:40:15,047 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 07:40:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:15,301 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-20 07:40:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:40:15,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-11-20 07:40:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:15,304 INFO L225 Difference]: With dead ends: 58 [2021-11-20 07:40:15,304 INFO L226 Difference]: Without dead ends: 56 [2021-11-20 07:40:15,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:40:15,306 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 42 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:15,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 401 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:40:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-20 07:40:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-20 07:40:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-11-20 07:40:15,333 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-11-20 07:40:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:15,335 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-11-20 07:40:15,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 07:40:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-11-20 07:40:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:40:15,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:15,339 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-20 07:40:15,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:15,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:15,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-11-20 07:40:15,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:15,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140307115] [2021-11-20 07:40:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:15,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:15,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:15,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:15,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:40:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:15,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:40:15,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:16,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:40:16,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:16,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140307115] [2021-11-20 07:40:16,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140307115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:16,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:16,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-20 07:40:16,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222566716] [2021-11-20 07:40:16,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:16,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:40:16,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:40:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:40:16,471 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 07:40:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:16,749 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-11-20 07:40:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:40:16,750 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2021-11-20 07:40:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:16,751 INFO L225 Difference]: With dead ends: 62 [2021-11-20 07:40:16,752 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 07:40:16,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:40:16,754 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 15 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:16,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 453 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2021-11-20 07:40:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 07:40:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-20 07:40:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-11-20 07:40:16,766 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-11-20 07:40:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:16,767 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-11-20 07:40:16,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 07:40:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-11-20 07:40:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 07:40:16,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:16,769 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2021-11-20 07:40:16,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:16,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:16,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:16,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:16,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-11-20 07:40:16,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:16,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114097606] [2021-11-20 07:40:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:16,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:16,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:16,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:17,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:40:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:17,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:40:17,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-20 07:40:17,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-20 07:40:17,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:17,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114097606] [2021-11-20 07:40:17,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114097606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:40:17,725 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:40:17,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-20 07:40:17,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400638838] [2021-11-20 07:40:17,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:17,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:40:17,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:17,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:40:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:40:17,738 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 07:40:17,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:17,907 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-11-20 07:40:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:40:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-11-20 07:40:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:17,910 INFO L225 Difference]: With dead ends: 66 [2021-11-20 07:40:17,910 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 07:40:17,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:40:17,912 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:17,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 309 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:40:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 07:40:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-20 07:40:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-11-20 07:40:17,934 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-11-20 07:40:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:17,937 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-11-20 07:40:17,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 07:40:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-11-20 07:40:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 07:40:17,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:17,945 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:17,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:18,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:18,159 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-11-20 07:40:18,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:18,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494647394] [2021-11-20 07:40:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:18,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:18,162 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:18,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:40:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:40:18,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:40:18,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-20 07:40:18,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:18,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494647394] [2021-11-20 07:40:18,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494647394] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:40:18,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:40:18,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-20 07:40:18,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011196920] [2021-11-20 07:40:18,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:40:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:40:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:40:18,950 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 07:40:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:19,076 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-11-20 07:40:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:40:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-11-20 07:40:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:19,079 INFO L225 Difference]: With dead ends: 107 [2021-11-20 07:40:19,079 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 07:40:19,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:40:19,080 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 29 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:19,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 234 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:40:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 07:40:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-11-20 07:40:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-20 07:40:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-11-20 07:40:19,100 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-11-20 07:40:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:19,102 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-11-20 07:40:19,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 07:40:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-11-20 07:40:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 07:40:19,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:19,110 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:19,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:19,324 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-11-20 07:40:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:19,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756288723] [2021-11-20 07:40:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:19,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:19,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:19,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:19,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:40:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:40:19,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:40:19,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-20 07:40:20,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756288723] [2021-11-20 07:40:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756288723] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:40:20,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:40:20,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-20 07:40:20,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880330657] [2021-11-20 07:40:20,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:20,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:40:20,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:40:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:40:20,098 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 07:40:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:20,132 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-11-20 07:40:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:40:20,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2021-11-20 07:40:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:20,135 INFO L225 Difference]: With dead ends: 131 [2021-11-20 07:40:20,136 INFO L226 Difference]: Without dead ends: 78 [2021-11-20 07:40:20,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:40:20,138 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:20,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:40:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-20 07:40:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-20 07:40:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-20 07:40:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-11-20 07:40:20,153 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-11-20 07:40:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:20,153 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-11-20 07:40:20,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 07:40:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-11-20 07:40:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 07:40:20,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:20,155 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:20,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:20,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:20,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-11-20 07:40:20,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:20,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384668050] [2021-11-20 07:40:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:20,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:20,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:20,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:20,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:40:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:40:20,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:40:20,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-20 07:40:21,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:21,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384668050] [2021-11-20 07:40:21,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384668050] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:40:21,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:40:21,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-11-20 07:40:21,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269123701] [2021-11-20 07:40:21,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:21,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:40:21,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:21,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:40:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:40:21,274 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 07:40:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:21,437 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-11-20 07:40:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:40:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2021-11-20 07:40:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:21,441 INFO L225 Difference]: With dead ends: 100 [2021-11-20 07:40:21,441 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 07:40:21,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:40:21,442 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 34 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:21,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 239 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:40:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 07:40:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 07:40:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-11-20 07:40:21,461 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-11-20 07:40:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:21,461 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-11-20 07:40:21,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 07:40:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-11-20 07:40:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 07:40:21,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:21,464 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:21,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:21,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:21,679 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-11-20 07:40:21,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:21,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725432464] [2021-11-20 07:40:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:21,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:21,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:21,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:21,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:40:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:21,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:40:21,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:40:22,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-20 07:40:22,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:22,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725432464] [2021-11-20 07:40:22,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725432464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:22,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:22,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-11-20 07:40:22,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190957632] [2021-11-20 07:40:22,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:22,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:40:22,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:40:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:40:22,798 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:22,991 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-11-20 07:40:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:40:22,992 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2021-11-20 07:40:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:22,993 INFO L225 Difference]: With dead ends: 122 [2021-11-20 07:40:22,993 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 07:40:22,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:40:22,995 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:22,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 403 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2021-11-20 07:40:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 07:40:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-20 07:40:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-11-20 07:40:23,008 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-11-20 07:40:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:23,008 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-11-20 07:40:23,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-11-20 07:40:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 07:40:23,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:23,010 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:23,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 07:40:23,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:23,230 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-11-20 07:40:23,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:23,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753483773] [2021-11-20 07:40:23,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:40:23,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:23,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:23,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:40:23,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:40:23,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:40:23,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:40:23,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:40:24,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-20 07:40:24,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753483773] [2021-11-20 07:40:24,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753483773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:24,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:24,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-11-20 07:40:24,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198428609] [2021-11-20 07:40:24,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:25,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:40:25,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:40:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:40:25,001 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:26,006 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-11-20 07:40:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:40:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2021-11-20 07:40:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:26,009 INFO L225 Difference]: With dead ends: 130 [2021-11-20 07:40:26,009 INFO L226 Difference]: Without dead ends: 77 [2021-11-20 07:40:26,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 07:40:26,011 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:26,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 702 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2021-11-20 07:40:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-20 07:40:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-20 07:40:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 07:40:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-11-20 07:40:26,025 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-11-20 07:40:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:26,025 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-11-20 07:40:26,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-11-20 07:40:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 07:40:26,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:26,027 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:26,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:26,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:26,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-11-20 07:40:26,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:26,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80849509] [2021-11-20 07:40:26,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:40:26,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:26,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:26,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:40:26,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 07:40:26,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:40:26,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:40:26,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-20 07:40:26,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-20 07:40:27,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:27,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80849509] [2021-11-20 07:40:27,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80849509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:27,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:27,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-20 07:40:27,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218846345] [2021-11-20 07:40:27,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:27,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:40:27,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:40:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:40:27,406 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-20 07:40:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:28,350 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-11-20 07:40:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:40:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2021-11-20 07:40:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:28,353 INFO L225 Difference]: With dead ends: 113 [2021-11-20 07:40:28,353 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:40:28,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:40:28,354 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:28,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 360 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 88 Invalid, 0 Unknown, 13 Unchecked, 0.7s Time] [2021-11-20 07:40:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:40:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-11-20 07:40:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 07:40:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-11-20 07:40:28,368 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-11-20 07:40:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:28,368 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-11-20 07:40:28,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-20 07:40:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-11-20 07:40:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 07:40:28,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:28,370 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:28,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:28,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:28,583 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-11-20 07:40:28,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:28,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574000805] [2021-11-20 07:40:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:28,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:28,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:28,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:40:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:40:28,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-20 07:40:30,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 07:40:31,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574000805] [2021-11-20 07:40:31,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574000805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:40:31,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:40:31,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-11-20 07:40:31,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177317530] [2021-11-20 07:40:31,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:40:31,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 07:40:31,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 07:40:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:40:31,698 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:32,123 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-11-20 07:40:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:40:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2021-11-20 07:40:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:32,124 INFO L225 Difference]: With dead ends: 142 [2021-11-20 07:40:32,125 INFO L226 Difference]: Without dead ends: 84 [2021-11-20 07:40:32,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:40:32,126 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:32,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 803 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2021-11-20 07:40:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-20 07:40:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-20 07:40:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 07:40:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-11-20 07:40:32,137 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-11-20 07:40:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:32,137 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-11-20 07:40:32,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-20 07:40:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-11-20 07:40:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 07:40:32,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:32,141 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:32,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:32,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:32,355 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-11-20 07:40:32,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:32,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651885227] [2021-11-20 07:40:32,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:40:32,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:32,357 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:32,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ba8f6d-5b17-404d-ab23-56025366a02d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:40:32,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:40:32,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:40:33,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-20 07:40:33,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:33,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 07:40:33,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 07:40:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:33,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-20 07:40:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-20 07:40:34,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:34,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2021-11-20 07:40:35,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:35,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2021-11-20 07:40:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 74 [2021-11-20 07:40:36,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:36,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2021-11-20 07:40:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:37,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2021-11-20 07:40:42,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:40:42,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:40:42,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2021-11-20 07:40:50,651 INFO L354 Elim1Store]: treesize reduction 386, result has 1.8 percent of original size [2021-11-20 07:40:50,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 28 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 145 treesize of output 79 [2021-11-20 07:40:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:40:51,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:50:22,513 WARN L227 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 184 DAG size of output: 90 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:50:22,514 INFO L354 Elim1Store]: treesize reduction 1881, result has 15.0 percent of original size [2021-11-20 07:50:22,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 4947303203755 treesize of output 2885715756279