./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_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_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/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_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/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_17b3339d-1792-48b8-88ae-9dd609f69c99/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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:38:00,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:38:00,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:38:00,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:38:00,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:38:00,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:38:00,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:38:00,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:38:00,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:38:00,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:38:00,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:38:00,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:38:00,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:38:00,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:38:00,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:38:00,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:38:00,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:38:00,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:38:00,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:38:00,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:38:00,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:38:00,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:38:00,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:38:00,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:38:00,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:38:00,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:38:00,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:38:00,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:38:00,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:38:00,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:38:00,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:38:00,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:38:00,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:38:00,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:38:00,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:38:00,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:38:00,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:38:00,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:38:00,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:38:00,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:38:00,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:38:00,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:38:01,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:38:01,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:38:01,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:38:01,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:38:01,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:38:01,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:38:01,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:38:01,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:38:01,041 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:38:01,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:38:01,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:38:01,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:38:01,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:38:01,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:38:01,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:38:01,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:38:01,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:38:01,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:38:01,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:38:01,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:38:01,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:38:01,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:01,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:38:01,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:38:01,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:38:01,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:38:01,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:38:01,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:38:01,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:38:01,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:38:01,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:38:01,050 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_17b3339d-1792-48b8-88ae-9dd609f69c99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-20 07:38:01,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:38:01,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:38:01,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:38:01,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:38:01,428 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:38:01,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-20 07:38:01,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/data/c1bc1c49e/059509c794ac44739c7190fb23a5ef72/FLAGd238eb775 [2021-11-20 07:38:02,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:38:02,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-20 07:38:02,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/data/c1bc1c49e/059509c794ac44739c7190fb23a5ef72/FLAGd238eb775 [2021-11-20 07:38:02,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/data/c1bc1c49e/059509c794ac44739c7190fb23a5ef72 [2021-11-20 07:38:02,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:38:02,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:38:02,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:02,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:38:02,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:38:02,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:02" (1/1) ... [2021-11-20 07:38:02,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409579e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:02, skipping insertion in model container [2021-11-20 07:38:02,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:02" (1/1) ... [2021-11-20 07:38:02,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:38:03,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:38:03,329 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_17b3339d-1792-48b8-88ae-9dd609f69c99/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-20 07:38:03,335 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_17b3339d-1792-48b8-88ae-9dd609f69c99/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-20 07:38:04,452 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:38:04,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,557 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,560 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:04,561 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:38:05,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:38:05,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:38:05,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:38:05,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:38:05,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:38:05,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:38:05,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:38:05,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:38:05,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:38:05,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:05,322 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:38:05,345 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_17b3339d-1792-48b8-88ae-9dd609f69c99/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-20 07:38:05,346 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_17b3339d-1792-48b8-88ae-9dd609f69c99/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-20 07:38:05,460 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:38:05,477 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,478 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,478 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:38:05,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:38:05,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:38:05,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:38:05,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:38:05,594 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:38:05,594 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:38:05,595 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:38:05,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:38:05,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:38:05,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:38:05,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:05,956 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:38:05,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05 WrapperNode [2021-11-20 07:38:05,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:05,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:05,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:38:05,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:38:05,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,219 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2021-11-20 07:38:06,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:06,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:38:06,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:38:06,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:38:06,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:38:06,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:38:06,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:38:06,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:38:06,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:06,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:06,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:38:06,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:38:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 07:38:06,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 07:38:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:38:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 07:38:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 07:38:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 07:38:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 07:38:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-20 07:38:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-20 07:38:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:38:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 07:38:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 07:38:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:38:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:38:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:38:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:38:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:38:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:38:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:38:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 07:38:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 07:38:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 07:38:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 07:38:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 07:38:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 07:38:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 07:38:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 07:38:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:38:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:38:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:38:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:38:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:38:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 07:38:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 07:38:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 07:38:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 07:38:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:38:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-20 07:38:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-20 07:38:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-20 07:38:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-20 07:38:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:38:06,890 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:38:06,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:38:08,137 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:38:08,157 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:38:08,158 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 07:38:08,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:08 BoogieIcfgContainer [2021-11-20 07:38:08,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:38:08,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:38:08,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:38:08,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:38:08,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:38:02" (1/3) ... [2021-11-20 07:38:08,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a09e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:08, skipping insertion in model container [2021-11-20 07:38:08,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (2/3) ... [2021-11-20 07:38:08,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a09e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:08, skipping insertion in model container [2021-11-20 07:38:08,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:08" (3/3) ... [2021-11-20 07:38:08,171 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-11-20 07:38:08,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:38:08,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:38:08,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:38:08,278 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 07:38:08,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:38:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-20 07:38:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-20 07:38:08,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:08,320 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:08,321 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2021-11-20 07:38:08,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911712679] [2021-11-20 07:38:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:08,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:38:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:38:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:38:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 07:38:09,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911712679] [2021-11-20 07:38:09,074 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 07:38:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849211485] [2021-11-20 07:38:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:09,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:09,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:09,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:38:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:09,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:38:09,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-20 07:38:10,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:38:10,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849211485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:10,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:10,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:38:10,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096781989] [2021-11-20 07:38:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:10,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:38:10,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:38:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:38:10,080 INFO L87 Difference]: Start difference. First operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 07:38:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:10,187 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2021-11-20 07:38:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:38:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2021-11-20 07:38:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:10,213 INFO L225 Difference]: With dead ends: 389 [2021-11-20 07:38:10,213 INFO L226 Difference]: Without dead ends: 190 [2021-11-20 07:38:10,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:38:10,231 INFO L933 BasicCegarLoop]: 261 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, 261 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 07:38:10,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:38:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-20 07:38:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-20 07:38:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-20 07:38:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2021-11-20 07:38:10,346 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2021-11-20 07:38:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:10,349 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2021-11-20 07:38:10,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 07:38:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2021-11-20 07:38:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 07:38:10,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:10,364 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:10,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 07:38:10,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2021-11-20 07:38:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:10,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338036406] [2021-11-20 07:38:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:10,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:10,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:10,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048992339] [2021-11-20 07:38:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:10,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:10,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:10,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:10,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:38:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:11,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 07:38:11,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-20 07:38:11,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 07:38:12,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338036406] [2021-11-20 07:38:12,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:12,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048992339] [2021-11-20 07:38:12,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048992339] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:12,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:38:12,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-11-20 07:38:12,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937484726] [2021-11-20 07:38:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:12,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:38:12,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:12,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:38:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:38:12,170 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-20 07:38:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:12,300 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-11-20 07:38:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:38:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 133 [2021-11-20 07:38:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:12,306 INFO L225 Difference]: With dead ends: 198 [2021-11-20 07:38:12,306 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 07:38:12,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:38:12,309 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 6 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:12,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 985 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:38:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 07:38:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-20 07:38:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 127 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-11-20 07:38:12,335 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2021-11-20 07:38:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:12,336 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-11-20 07:38:12,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-20 07:38:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-11-20 07:38:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 07:38:12,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:12,340 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:12,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:12,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 07:38:12,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2021-11-20 07:38:12,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:12,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460549187] [2021-11-20 07:38:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:12,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:12,640 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:12,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068138548] [2021-11-20 07:38:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:12,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:12,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:12,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:12,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:38:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:13,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:38:13,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-20 07:38:13,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:38:13,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460549187] [2021-11-20 07:38:13,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068138548] [2021-11-20 07:38:13,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068138548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:13,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:13,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:38:13,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070307038] [2021-11-20 07:38:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:13,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:38:13,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:38:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:38:13,454 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-20 07:38:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:13,584 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2021-11-20 07:38:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:38:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2021-11-20 07:38:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:13,589 INFO L225 Difference]: With dead ends: 379 [2021-11-20 07:38:13,589 INFO L226 Difference]: Without dead ends: 195 [2021-11-20 07:38:13,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:38:13,597 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 13 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:13,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1213 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-20 07:38:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-20 07:38:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-20 07:38:13,635 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2021-11-20 07:38:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:13,635 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-20 07:38:13,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-20 07:38:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-20 07:38:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 07:38:13,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:13,637 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:13,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:13,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:13,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2021-11-20 07:38:13,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60892862] [2021-11-20 07:38:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:13,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:13,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576269534] [2021-11-20 07:38:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:13,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:13,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:13,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:38:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:38:14,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-20 07:38:14,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-20 07:38:15,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60892862] [2021-11-20 07:38:15,439 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576269534] [2021-11-20 07:38:15,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576269534] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:15,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:38:15,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2021-11-20 07:38:15,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536049833] [2021-11-20 07:38:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:15,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:38:15,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:38:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:38:15,442 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-20 07:38:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:15,539 INFO L93 Difference]: Finished difference Result 380 states and 496 transitions. [2021-11-20 07:38:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:38:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 135 [2021-11-20 07:38:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:15,545 INFO L225 Difference]: With dead ends: 380 [2021-11-20 07:38:15,546 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 07:38:15,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:38:15,550 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 12 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:15,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1209 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 07:38:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-20 07:38:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-11-20 07:38:15,586 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2021-11-20 07:38:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:15,587 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-11-20 07:38:15,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-20 07:38:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-11-20 07:38:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-20 07:38:15,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:15,594 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:15,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:15,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:15,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2021-11-20 07:38:15,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:15,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135868182] [2021-11-20 07:38:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:15,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:15,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087801361] [2021-11-20 07:38:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:15,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:15,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:15,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:38:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:16,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:38:16,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-20 07:38:17,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-20 07:38:17,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135868182] [2021-11-20 07:38:17,780 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087801361] [2021-11-20 07:38:17,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087801361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:17,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:17,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-20 07:38:17,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919566818] [2021-11-20 07:38:17,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:17,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:38:17,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:38:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:38:17,785 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:17,957 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2021-11-20 07:38:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:38:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 139 [2021-11-20 07:38:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:17,961 INFO L225 Difference]: With dead ends: 384 [2021-11-20 07:38:17,961 INFO L226 Difference]: Without dead ends: 199 [2021-11-20 07:38:17,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:38:17,963 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 35 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:17,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1693 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-20 07:38:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-20 07:38:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-11-20 07:38:17,978 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2021-11-20 07:38:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:17,979 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-11-20 07:38:17,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-11-20 07:38:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 07:38:17,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:17,982 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:18,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:18,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:18,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2021-11-20 07:38:18,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:18,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391075913] [2021-11-20 07:38:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:18,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:18,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:18,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513835808] [2021-11-20 07:38:18,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:38:18,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:18,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:18,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:38:20,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:38:20,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:20,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2324 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 07:38:20,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-20 07:38:21,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-20 07:38:22,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391075913] [2021-11-20 07:38:22,273 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513835808] [2021-11-20 07:38:22,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513835808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:22,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:22,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-11-20 07:38:22,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88160860] [2021-11-20 07:38:22,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:22,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:38:22,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:38:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:38:22,276 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-20 07:38:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:22,539 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2021-11-20 07:38:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:38:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 143 [2021-11-20 07:38:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:22,543 INFO L225 Difference]: With dead ends: 388 [2021-11-20 07:38:22,543 INFO L226 Difference]: Without dead ends: 201 [2021-11-20 07:38:22,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:38:22,546 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 40 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:22,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1945 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-20 07:38:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-11-20 07:38:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-11-20 07:38:22,563 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2021-11-20 07:38:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:22,564 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-11-20 07:38:22,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-20 07:38:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-11-20 07:38:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-20 07:38:22,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:22,567 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:22,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:22,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:22,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2021-11-20 07:38:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:22,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064264841] [2021-11-20 07:38:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:22,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:22,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:22,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035291186] [2021-11-20 07:38:22,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:38:22,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:22,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:22,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:38:24,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 07:38:24,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:38:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-20 07:38:25,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 07:38:26,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:26,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064264841] [2021-11-20 07:38:26,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035291186] [2021-11-20 07:38:26,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035291186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:26,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:26,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-20 07:38:26,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391553135] [2021-11-20 07:38:26,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:26,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:38:26,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:38:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:38:26,062 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-20 07:38:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:26,418 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-11-20 07:38:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:38:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2021-11-20 07:38:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:26,423 INFO L225 Difference]: With dead ends: 392 [2021-11-20 07:38:26,423 INFO L226 Difference]: Without dead ends: 203 [2021-11-20 07:38:26,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:38:26,426 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 37 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:26,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2425 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-20 07:38:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-11-20 07:38:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-11-20 07:38:26,443 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2021-11-20 07:38:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:26,444 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-11-20 07:38:26,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-20 07:38:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-11-20 07:38:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-20 07:38:26,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:26,448 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:26,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:26,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:26,666 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:26,666 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2021-11-20 07:38:26,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:26,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998263388] [2021-11-20 07:38:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:26,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:26,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514373202] [2021-11-20 07:38:26,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:38:26,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:26,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:26,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:26,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:38:28,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:38:28,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:28,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 07:38:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 189 proven. 16 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 07:38:29,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-20 07:38:30,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998263388] [2021-11-20 07:38:30,067 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514373202] [2021-11-20 07:38:30,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514373202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:30,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:30,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-20 07:38:30,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998959534] [2021-11-20 07:38:30,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:30,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:38:30,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:38:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:38:30,070 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:30,402 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2021-11-20 07:38:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:38:30,403 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 151 [2021-11-20 07:38:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:30,406 INFO L225 Difference]: With dead ends: 396 [2021-11-20 07:38:30,407 INFO L226 Difference]: Without dead ends: 205 [2021-11-20 07:38:30,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:38:30,409 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 50 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:30,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2189 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-20 07:38:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-11-20 07:38:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-11-20 07:38:30,426 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2021-11-20 07:38:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:30,427 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-11-20 07:38:30,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-11-20 07:38:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 07:38:30,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:30,431 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:30,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:30,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:30,644 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2021-11-20 07:38:30,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:30,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513159578] [2021-11-20 07:38:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:30,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:30,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461706224] [2021-11-20 07:38:30,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:38:30,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:30,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:30,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:38:32,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-20 07:38:32,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:32,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:38:32,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-20 07:38:32,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-20 07:38:33,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513159578] [2021-11-20 07:38:33,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461706224] [2021-11-20 07:38:33,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461706224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:33,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:33,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-20 07:38:33,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554685576] [2021-11-20 07:38:33,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:33,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:38:33,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:38:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:38:33,602 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:34,052 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2021-11-20 07:38:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:38:34,053 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 155 [2021-11-20 07:38:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:34,058 INFO L225 Difference]: With dead ends: 400 [2021-11-20 07:38:34,058 INFO L226 Difference]: Without dead ends: 207 [2021-11-20 07:38:34,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-11-20 07:38:34,063 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 47 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:34,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2671 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:38:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-20 07:38:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-11-20 07:38:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:38:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-11-20 07:38:34,082 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2021-11-20 07:38:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:34,083 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-11-20 07:38:34,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:38:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-11-20 07:38:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-20 07:38:34,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:34,087 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:34,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:34,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:34,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2021-11-20 07:38:34,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339102301] [2021-11-20 07:38:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:34,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:34,418 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:34,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161557774] [2021-11-20 07:38:34,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:38:34,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:34,456 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:34,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:42:58,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-11-20 07:42:58,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:42:58,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-20 07:42:58,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:59,743 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 19 treesize of output 15 [2021-11-20 07:42:59,760 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 17 treesize of output 13 [2021-11-20 07:43:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 59 proven. 112 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2021-11-20 07:43:00,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:02,965 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_50| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_50| Int) (|ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.base| Int) (|ULTIMATE.start_aws_array_list_init_dynamic_~item_size#1| Int) (v_DerPreprocessor_1 Int)) (let ((.cse0 (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_50| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_50|))) (or (< 0 (mod .cse0 18446744073709551616)) (= (mod (select (store (store (select (store |c_#memory_int| |ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.base|) |c_ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.offset| .cse0)) |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.base|) (+ |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| 24) |ULTIMATE.start_aws_array_list_init_dynamic_~item_size#1|) |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| v_DerPreprocessor_1) (+ |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| 8)) 18446744073709551616) 0)))) is different from false [2021-11-20 07:43:02,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339102301] [2021-11-20 07:43:02,968 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:43:02,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161557774] [2021-11-20 07:43:02,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161557774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:02,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:43:02,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-20 07:43:02,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113284630] [2021-11-20 07:43:02,969 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:43:02,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:43:02,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:43:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=593, Unknown=1, NotChecked=48, Total=702 [2021-11-20 07:43:02,971 INFO L87 Difference]: Start difference. First operand 206 states and 268 transitions. Second operand has 20 states, 19 states have (on average 4.157894736842105) internal successors, (79), 20 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-20 07:43:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:04,243 INFO L93 Difference]: Finished difference Result 404 states and 520 transitions. [2021-11-20 07:43:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:43:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.157894736842105) internal successors, (79), 20 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 159 [2021-11-20 07:43:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:04,247 INFO L225 Difference]: With dead ends: 404 [2021-11-20 07:43:04,247 INFO L226 Difference]: Without dead ends: 209 [2021-11-20 07:43:04,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=115, Invalid=1220, Unknown=1, NotChecked=70, Total=1406 [2021-11-20 07:43:04,249 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 25 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:04,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 3302 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:43:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-20 07:43:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-20 07:43:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 137 states have (on average 1.197080291970803) internal successors, (164), 140 states have internal predecessors, (164), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:43:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 270 transitions. [2021-11-20 07:43:04,267 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 270 transitions. Word has length 159 [2021-11-20 07:43:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:04,268 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 270 transitions. [2021-11-20 07:43:04,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.157894736842105) internal successors, (79), 20 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-20 07:43:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 270 transitions. [2021-11-20 07:43:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-20 07:43:04,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:04,272 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:04,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:04,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:43:04,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1230035446, now seen corresponding path program 7 times [2021-11-20 07:43:04,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:04,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405752795] [2021-11-20 07:43:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:04,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:04,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:43:04,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849394656] [2021-11-20 07:43:04,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:43:04,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:04,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:04,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:43:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:05,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 07:43:05,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 261 proven. 49 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-20 07:43:06,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-20 07:43:08,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:08,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405752795] [2021-11-20 07:43:08,229 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:43:08,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849394656] [2021-11-20 07:43:08,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849394656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:43:08,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:43:08,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-11-20 07:43:08,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999380991] [2021-11-20 07:43:08,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:43:08,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 07:43:08,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 07:43:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2021-11-20 07:43:08,233 INFO L87 Difference]: Start difference. First operand 208 states and 270 transitions. Second operand has 27 states, 25 states have (on average 4.24) internal successors, (106), 27 states have internal predecessors, (106), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:43:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:09,325 INFO L93 Difference]: Finished difference Result 408 states and 524 transitions. [2021-11-20 07:43:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:43:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.24) internal successors, (106), 27 states have internal predecessors, (106), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 163 [2021-11-20 07:43:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:09,328 INFO L225 Difference]: With dead ends: 408 [2021-11-20 07:43:09,328 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 07:43:09,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 07:43:09,331 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 49 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3877 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:09,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3877 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:43:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 07:43:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-11-20 07:43:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:43:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 272 transitions. [2021-11-20 07:43:09,347 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 272 transitions. Word has length 163 [2021-11-20 07:43:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:09,351 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 272 transitions. [2021-11-20 07:43:09,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.24) internal successors, (106), 27 states have internal predecessors, (106), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 07:43:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 272 transitions. [2021-11-20 07:43:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:43:09,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:09,356 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:09,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:43:09,572 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1033131702, now seen corresponding path program 8 times [2021-11-20 07:43:09,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:09,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008941815] [2021-11-20 07:43:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:09,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:09,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:43:09,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111934295] [2021-11-20 07:43:09,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:43:09,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:09,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:09,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:43:11,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:43:11,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:43:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-20 07:43:11,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 9 proven. 264 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 07:43:12,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 154 proven. 64 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-11-20 07:43:13,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008941815] [2021-11-20 07:43:13,491 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:43:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111934295] [2021-11-20 07:43:13,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111934295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:43:13,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:43:13,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2021-11-20 07:43:13,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446294499] [2021-11-20 07:43:13,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:43:13,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 07:43:13,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:13,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 07:43:13,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:43:13,494 INFO L87 Difference]: Start difference. First operand 210 states and 272 transitions. Second operand has 29 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 29 states have internal predecessors, (104), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-20 07:43:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:14,544 INFO L93 Difference]: Finished difference Result 412 states and 528 transitions. [2021-11-20 07:43:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:43:14,545 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 29 states have internal predecessors, (104), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 167 [2021-11-20 07:43:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:14,547 INFO L225 Difference]: With dead ends: 412 [2021-11-20 07:43:14,548 INFO L226 Difference]: Without dead ends: 213 [2021-11-20 07:43:14,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=294, Invalid=1512, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 07:43:14,550 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 57 mSDsluCounter, 5778 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6021 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:14,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 6021 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:43:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-20 07:43:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-11-20 07:43:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 144 states have internal predecessors, (168), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 07:43:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 274 transitions. [2021-11-20 07:43:14,564 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 274 transitions. Word has length 167 [2021-11-20 07:43:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:14,565 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 274 transitions. [2021-11-20 07:43:14,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 29 states have internal predecessors, (104), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-20 07:43:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 274 transitions. [2021-11-20 07:43:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-20 07:43:14,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:14,568 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:14,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:14,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:43:14,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 210305654, now seen corresponding path program 9 times [2021-11-20 07:43:14,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:14,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575882446] [2021-11-20 07:43:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:14,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:14,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:43:14,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119660204] [2021-11-20 07:43:14,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:43:14,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:14,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:14,857 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:14,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b3339d-1792-48b8-88ae-9dd609f69c99/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process