./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:37:27,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:27,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:27,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:27,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:27,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:27,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:27,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:27,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:27,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:27,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:27,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:27,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:27,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:27,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:27,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:27,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:27,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:27,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:27,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:27,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:27,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:27,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:27,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:27,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:27,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:27,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:27,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:27,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:27,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:27,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:27,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:27,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:27,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:27,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:27,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:27,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:27,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:27,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:27,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:27,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:27,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:37:27,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:27,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:27,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:27,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:27,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:27,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:27,955 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:27,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:27,955 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:27,956 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:27,956 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:27,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:27,956 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:27,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:27,957 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:27,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:27,957 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:27,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:27,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:27,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:27,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:27,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:27,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:27,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:27,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:27,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:27,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:27,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:27,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:27,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:27,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:27,962 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:27,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:27,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:27,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:27,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:27,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:27,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:27,964 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_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2022-10-17 17:37:28,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:28,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:28,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:28,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:28,261 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:28,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-10-17 17:37:28,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/data/5b3b1eb36/13483410c0104b77afeddd95f40eb04a/FLAGe5530649f [2022-10-17 17:37:29,324 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:29,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-10-17 17:37:29,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/data/5b3b1eb36/13483410c0104b77afeddd95f40eb04a/FLAGe5530649f [2022-10-17 17:37:29,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/data/5b3b1eb36/13483410c0104b77afeddd95f40eb04a [2022-10-17 17:37:29,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:29,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:29,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:29,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:29,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:29,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:29" (1/1) ... [2022-10-17 17:37:29,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b3f012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:29, skipping insertion in model container [2022-10-17 17:37:29,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:29" (1/1) ... [2022-10-17 17:37:29,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:29,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:30,195 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_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2022-10-17 17:37:30,204 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_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2022-10-17 17:37:31,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,419 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,420 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,457 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,458 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,464 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:31,940 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:37:31,942 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:37:31,943 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:37:31,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:37:31,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:37:31,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:37:31,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:37:31,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:37:31,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:37:31,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:37:32,190 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:37:32,729 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,731 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,787 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:32,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:32,954 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:32,985 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_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2022-10-17 17:37:32,986 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_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2022-10-17 17:37:33,044 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,044 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,045 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,046 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,047 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,067 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,069 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,072 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,073 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,074 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,074 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:37:33,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:37:33,127 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:37:33,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:37:33,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:37:33,130 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:37:33,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:37:33,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:37:33,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:37:33,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:37:33,170 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:37:33,370 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,381 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,385 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,386 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,398 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,399 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,401 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,401 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,402 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:37:33,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:33,838 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:33,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33 WrapperNode [2022-10-17 17:37:33,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:33,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:33,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:33,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:33,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,128 INFO L138 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2022-10-17 17:37:34,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:34,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:34,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:34,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:34,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:34,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:34,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:34,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:34,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:34,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:34,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:34,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:37:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:37:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 17:37:34,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 17:37:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:37:34,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:37:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-10-17 17:37:34,384 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-10-17 17:37:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:37:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 17:37:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 17:37:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 17:37:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 17:37:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:37:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:37:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-10-17 17:37:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-10-17 17:37:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 17:37:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 17:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-10-17 17:37:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-10-17 17:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2022-10-17 17:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2022-10-17 17:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-10-17 17:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-10-17 17:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-10-17 17:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-10-17 17:37:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:37:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:37:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-10-17 17:37:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-10-17 17:37:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-10-17 17:37:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-10-17 17:37:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:37:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 17:37:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 17:37:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-10-17 17:37:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-10-17 17:37:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:34,910 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:34,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:35,053 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-10-17 17:37:36,359 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:36,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:36,663 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 17:37:36,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:36 BoogieIcfgContainer [2022-10-17 17:37:36,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:36,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:36,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:36,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:36,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:29" (1/3) ... [2022-10-17 17:37:36,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c150245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:36, skipping insertion in model container [2022-10-17 17:37:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (2/3) ... [2022-10-17 17:37:36,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c150245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:36, skipping insertion in model container [2022-10-17 17:37:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:36" (3/3) ... [2022-10-17 17:37:36,680 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness-1.i [2022-10-17 17:37:36,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:36,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:36,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:36,799 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ca6f802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:36,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-10-17 17:37:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 17:37:36,827 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:36,828 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:36,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1099887866, now seen corresponding path program 1 times [2022-10-17 17:37:36,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:36,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502467897] [2022-10-17 17:37:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:37,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:37:37,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851715965] [2022-10-17 17:37:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:37,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:37,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:37:37,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:37:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:38,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:37:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 17:37:38,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:38,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502467897] [2022-10-17 17:37:38,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:37:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851715965] [2022-10-17 17:37:38,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851715965] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:38,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:38,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:37:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756221988] [2022-10-17 17:37:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:38,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:37:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:37:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:37:38,189 INFO L87 Difference]: Start difference. First operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 17:37:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:38,554 INFO L93 Difference]: Finished difference Result 199 states and 263 transitions. [2022-10-17 17:37:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:37:38,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2022-10-17 17:37:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:38,573 INFO L225 Difference]: With dead ends: 199 [2022-10-17 17:37:38,573 INFO L226 Difference]: Without dead ends: 129 [2022-10-17 17:37:38,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:37:38,588 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:38,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:37:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-17 17:37:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-10-17 17:37:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-10-17 17:37:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2022-10-17 17:37:38,668 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 110 [2022-10-17 17:37:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:38,671 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2022-10-17 17:37:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 17:37:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2022-10-17 17:37:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-17 17:37:38,683 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:38,683 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:38,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 17:37:38,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1013325337, now seen corresponding path program 1 times [2022-10-17 17:37:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:38,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736871313] [2022-10-17 17:37:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:39,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:37:39,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6796192] [2022-10-17 17:37:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:39,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:39,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:39,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:37:39,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:37:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:37:39,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 17:37:40,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:37:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-17 17:37:40,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736871313] [2022-10-17 17:37:40,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:37:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6796192] [2022-10-17 17:37:40,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6796192] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 17:37:40,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:37:40,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-10-17 17:37:40,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039157471] [2022-10-17 17:37:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:37:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:37:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:37:40,352 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 17:37:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:41,731 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2022-10-17 17:37:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:37:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 115 [2022-10-17 17:37:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:41,736 INFO L225 Difference]: With dead ends: 178 [2022-10-17 17:37:41,736 INFO L226 Difference]: Without dead ends: 131 [2022-10-17 17:37:41,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:37:41,739 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 144 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:41,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 550 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 17:37:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-17 17:37:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-10-17 17:37:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-10-17 17:37:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2022-10-17 17:37:41,760 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 115 [2022-10-17 17:37:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:41,761 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2022-10-17 17:37:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 17:37:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2022-10-17 17:37:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 17:37:41,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:41,779 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:41,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:42,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1522317453, now seen corresponding path program 1 times [2022-10-17 17:37:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:42,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007423912] [2022-10-17 17:37:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:42,112 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:37:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58948795] [2022-10-17 17:37:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:42,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:42,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:37:42,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:37:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:42,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:37:42,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-17 17:37:42,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:42,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007423912] [2022-10-17 17:37:42,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:37:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58948795] [2022-10-17 17:37:42,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58948795] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:42,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:42,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:37:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699411188] [2022-10-17 17:37:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:37:42,727 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:37:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:43,600 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2022-10-17 17:37:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:37:43,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2022-10-17 17:37:43,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:43,604 INFO L225 Difference]: With dead ends: 256 [2022-10-17 17:37:43,604 INFO L226 Difference]: Without dead ends: 135 [2022-10-17 17:37:43,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:37:43,607 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:43,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 547 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 17:37:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-10-17 17:37:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-10-17 17:37:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-10-17 17:37:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2022-10-17 17:37:43,665 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 116 [2022-10-17 17:37:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:43,665 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2022-10-17 17:37:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:37:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2022-10-17 17:37:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 17:37:43,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:43,668 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:43,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 17:37:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_501f4ad0-1b55-48b6-b4ea-b0d8853d71d9/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:43,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 348530035, now seen corresponding path program 1 times [2022-10-17 17:37:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:43,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501119495] [2022-10-17 17:37:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-17 17:37:46,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:46,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501119495] [2022-10-17 17:37:46,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501119495] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:46,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:46,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 17:37:46,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428780839] [2022-10-17 17:37:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:46,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 17:37:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 17:37:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 17:37:46,661 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 17:37:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:50,058 INFO L93 Difference]: Finished difference Result 186 states and 231 transitions. [2022-10-17 17:37:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:37:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 124 [2022-10-17 17:37:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:50,062 INFO L225 Difference]: With dead ends: 186 [2022-10-17 17:37:50,062 INFO L226 Difference]: Without dead ends: 137 [2022-10-17 17:37:50,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:37:50,064 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 31 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:50,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1032 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 17:37:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-17 17:37:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-10-17 17:37:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 79 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 20 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2022-10-17 17:37:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2022-10-17 17:37:50,082 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 124 [2022-10-17 17:37:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:50,083 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2022-10-17 17:37:50,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 17:37:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2022-10-17 17:37:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-10-17 17:37:50,085 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:50,085 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:37:50,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash -250304116, now seen corresponding path program 1 times [2022-10-17 17:37:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258998215] [2022-10-17 17:37:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-17 17:37:52,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258998215] [2022-10-17 17:37:52,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258998215] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:52,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:52,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 17:37:52,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284361857] [2022-10-17 17:37:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:52,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:37:52,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:37:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:37:52,319 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-10-17 17:37:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:54,907 INFO L93 Difference]: Finished difference Result 194 states and 240 transitions. [2022-10-17 17:37:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 17:37:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 128 [2022-10-17 17:37:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:54,910 INFO L225 Difference]: With dead ends: 194 [2022-10-17 17:37:54,910 INFO L226 Difference]: Without dead ends: 148 [2022-10-17 17:37:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:37:54,912 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 77 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 560 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 17:37:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-10-17 17:37:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 135. [2022-10-17 17:37:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-10-17 17:37:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2022-10-17 17:37:54,930 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 128 [2022-10-17 17:37:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:54,931 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2022-10-17 17:37:54,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-10-17 17:37:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2022-10-17 17:37:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-17 17:37:54,934 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:54,934 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:37:54,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash 413255849, now seen corresponding path program 1 times [2022-10-17 17:37:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:54,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030561583] [2022-10-17 17:37:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat