./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- 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 17:23:30,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:30,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:30,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:30,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:30,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:30,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:30,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:30,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:30,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:30,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:30,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:30,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:30,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:30,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:30,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:30,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:30,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:30,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:30,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:30,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:30,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:30,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:30,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:30,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:30,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:30,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:30,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:30,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:30,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:30,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:30,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:30,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:31,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:31,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:31,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:31,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:31,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:31,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:31,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:31,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:31,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:23:31,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:31,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:31,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:31,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:31,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:31,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:31,056 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:31,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:31,056 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:31,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:31,057 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:31,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:31,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:31,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:31,058 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:31,059 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:31,059 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:31,059 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:31,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:31,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:31,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:31,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:31,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:31,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:31,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:31,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:31,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:31,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:31,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:31,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:31,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:31,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:31,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:31,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:31,065 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:31,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:31,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:31,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:31,065 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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2022-10-17 17:23:31,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:31,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:31,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:31,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:31,440 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:31,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-10-17 17:23:31,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/data/ee178f028/9694a8ae8eb24f18988446f06c53cfa9/FLAG7c5c974d1 [2022-10-17 17:23:32,440 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:32,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-10-17 17:23:32,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/data/ee178f028/9694a8ae8eb24f18988446f06c53cfa9/FLAG7c5c974d1 [2022-10-17 17:23:32,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/data/ee178f028/9694a8ae8eb24f18988446f06c53cfa9 [2022-10-17 17:23:32,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:32,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:32,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:32,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:32,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:32,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:32" (1/1) ... [2022-10-17 17:23:32,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d98748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:32, skipping insertion in model container [2022-10-17 17:23:32,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:32" (1/1) ... [2022-10-17 17:23:32,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:33,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:33,390 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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-10-17 17:23:33,398 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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-10-17 17:23:34,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,835 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,851 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,852 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,854 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:34,857 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:23:35,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:23:35,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:23:35,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:23:35,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:23:35,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:23:35,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:23:35,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:23:35,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:23:35,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:23:35,646 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:23:35,690 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,765 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,766 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,766 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,766 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,766 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,767 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,767 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,768 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,815 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:35,882 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:35,912 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_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-10-17 17:23:35,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-10-17 17:23:35,943 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,943 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,943 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,950 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:35,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:23:36,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:23:36,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:23:36,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:23:36,004 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:23:36,004 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:23:36,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:23:36,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:23:36,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:23:36,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:23:36,023 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:23:36,035 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,039 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,057 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,059 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,059 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,065 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,066 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,072 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:23:36,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:36,361 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:36,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36 WrapperNode [2022-10-17 17:23:36,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:36,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:36,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:36,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:36,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,623 INFO L138 Inliner]: procedures = 697, calls = 1880, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1145 [2022-10-17 17:23:36,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:36,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:36,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:36,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:36,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:36,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:36,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:36,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:36,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:36,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:36,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:36,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-10-17 17:23:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-10-17 17:23:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2022-10-17 17:23:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2022-10-17 17:23:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-10-17 17:23:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-10-17 17:23:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-10-17 17:23:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-10-17 17:23:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-10-17 17:23:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-10-17 17:23:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 17:23:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 17:23:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-10-17 17:23:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-10-17 17:23:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-10-17 17:23:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-10-17 17:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 17:23:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 17:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:23:36,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:23:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-10-17 17:23:36,879 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-10-17 17:23:36,880 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-10-17 17:23:36,880 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-10-17 17:23:36,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:36,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:36,880 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 17:23:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 17:23:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 17:23:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 17:23:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-10-17 17:23:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-10-17 17:23:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-10-17 17:23:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-10-17 17:23:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-10-17 17:23:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-10-17 17:23:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-10-17 17:23:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-10-17 17:23:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:23:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:23:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:23:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:23:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-10-17 17:23:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-10-17 17:23:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-10-17 17:23:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-10-17 17:23:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-10-17 17:23:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-10-17 17:23:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:23:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-10-17 17:23:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-10-17 17:23:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:23:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2022-10-17 17:23:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2022-10-17 17:23:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-10-17 17:23:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-10-17 17:23:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 17:23:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 17:23:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 17:23:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 17:23:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-10-17 17:23:36,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-10-17 17:23:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:23:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-10-17 17:23:36,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-10-17 17:23:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-10-17 17:23:36,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-10-17 17:23:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-10-17 17:23:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-10-17 17:23:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 17:23:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 17:23:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:37,325 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:37,328 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:39,369 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:39,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:39,800 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 17:23:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:39 BoogieIcfgContainer [2022-10-17 17:23:39,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:39,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:39,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:39,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:39,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:32" (1/3) ... [2022-10-17 17:23:39,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca89ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:39, skipping insertion in model container [2022-10-17 17:23:39,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36" (2/3) ... [2022-10-17 17:23:39,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca89ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:39, skipping insertion in model container [2022-10-17 17:23:39,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:39" (3/3) ... [2022-10-17 17:23:39,817 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2022-10-17 17:23:39,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:39,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 17:23:39,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:39,945 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;@8b10a22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:39,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 17:23:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 461 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2022-10-17 17:23:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 17:23:39,974 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:39,976 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:39,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1314052006, now seen corresponding path program 1 times [2022-10-17 17:23:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718604373] [2022-10-17 17:23:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 17:23:41,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:41,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718604373] [2022-10-17 17:23:41,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718604373] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:41,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531958762] [2022-10-17 17:23:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:41,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:41,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:41,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:23:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:42,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:23:42,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:23:42,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:42,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531958762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:42,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:42,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-10-17 17:23:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742195642] [2022-10-17 17:23:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:42,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:23:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:23:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:23:42,240 INFO L87 Difference]: Start difference. First operand has 461 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-10-17 17:23:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:43,537 INFO L93 Difference]: Finished difference Result 895 states and 1358 transitions. [2022-10-17 17:23:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 123 [2022-10-17 17:23:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:43,572 INFO L225 Difference]: With dead ends: 895 [2022-10-17 17:23:43,572 INFO L226 Difference]: Without dead ends: 460 [2022-10-17 17:23:43,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:23:43,594 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 18 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:43,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2333 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 17:23:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-10-17 17:23:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-10-17 17:23:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 232 states have (on average 1.1896551724137931) internal successors, (276), 235 states have internal predecessors, (276), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2022-10-17 17:23:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 668 transitions. [2022-10-17 17:23:43,719 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 668 transitions. Word has length 123 [2022-10-17 17:23:43,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:43,720 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 668 transitions. [2022-10-17 17:23:43,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-10-17 17:23:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 668 transitions. [2022-10-17 17:23:43,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 17:23:43,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:43,725 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:43,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:43,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 17:23:43,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1194641517, now seen corresponding path program 1 times [2022-10-17 17:23:43,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:43,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608962692] [2022-10-17 17:23:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:43,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 17:23:44,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608962692] [2022-10-17 17:23:44,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608962692] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359981424] [2022-10-17 17:23:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:44,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:44,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:44,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:23:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:45,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:23:45,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:23:45,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359981424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:45,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-10-17 17:23:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084758574] [2022-10-17 17:23:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:23:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:23:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:23:45,622 INFO L87 Difference]: Start difference. First operand 460 states and 668 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-10-17 17:23:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:47,853 INFO L93 Difference]: Finished difference Result 905 states and 1354 transitions. [2022-10-17 17:23:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:23:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 131 [2022-10-17 17:23:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:47,861 INFO L225 Difference]: With dead ends: 905 [2022-10-17 17:23:47,862 INFO L226 Difference]: Without dead ends: 473 [2022-10-17 17:23:47,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:23:47,866 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 36 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:47,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3265 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 17:23:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-10-17 17:23:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2022-10-17 17:23:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-10-17 17:23:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2022-10-17 17:23:47,976 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 131 [2022-10-17 17:23:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:47,977 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2022-10-17 17:23:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-10-17 17:23:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2022-10-17 17:23:47,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-10-17 17:23:47,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:47,981 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:48,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:48,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash -972521449, now seen corresponding path program 1 times [2022-10-17 17:23:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:48,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812638975] [2022-10-17 17:23:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:48,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:23:48,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279738604] [2022-10-17 17:23:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:48,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:48,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:48,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:23:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:48,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:23:48,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:23:48,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:48,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812638975] [2022-10-17 17:23:48,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:23:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279738604] [2022-10-17 17:23:48,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279738604] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:48,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:48,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:23:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378539169] [2022-10-17 17:23:48,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:23:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:23:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:48,978 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-10-17 17:23:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:50,050 INFO L93 Difference]: Finished difference Result 922 states and 1420 transitions. [2022-10-17 17:23:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:23:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 140 [2022-10-17 17:23:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:50,058 INFO L225 Difference]: With dead ends: 922 [2022-10-17 17:23:50,058 INFO L226 Difference]: Without dead ends: 479 [2022-10-17 17:23:50,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:23:50,070 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 29 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:50,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2892 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 17:23:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-10-17 17:23:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 471. [2022-10-17 17:23:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-10-17 17:23:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2022-10-17 17:23:50,144 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 140 [2022-10-17 17:23:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:50,145 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2022-10-17 17:23:50,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-10-17 17:23:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2022-10-17 17:23:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-17 17:23:50,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:50,157 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:50,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:50,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:50,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash 909644124, now seen corresponding path program 1 times [2022-10-17 17:23:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:50,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004749226] [2022-10-17 17:23:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:50,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:23:50,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702004303] [2022-10-17 17:23:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:50,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:50,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:50,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:50,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:23:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:23:51,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-10-17 17:23:51,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:51,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004749226] [2022-10-17 17:23:51,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:23:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702004303] [2022-10-17 17:23:51,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702004303] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:51,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:51,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 17:23:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953583301] [2022-10-17 17:23:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:51,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:23:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:23:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:23:51,199 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-10-17 17:23:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:53,894 INFO L93 Difference]: Finished difference Result 924 states and 1417 transitions. [2022-10-17 17:23:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:23:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 148 [2022-10-17 17:23:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:53,901 INFO L225 Difference]: With dead ends: 924 [2022-10-17 17:23:53,902 INFO L226 Difference]: Without dead ends: 481 [2022-10-17 17:23:53,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:23:53,907 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 52 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:53,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3788 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-10-17 17:23:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-10-17 17:23:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 471. [2022-10-17 17:23:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-10-17 17:23:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 714 transitions. [2022-10-17 17:23:53,946 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 714 transitions. Word has length 148 [2022-10-17 17:23:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:53,947 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 714 transitions. [2022-10-17 17:23:53,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-10-17 17:23:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 714 transitions. [2022-10-17 17:23:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-10-17 17:23:53,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:53,951 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:53,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:54,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:54,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 245892058, now seen corresponding path program 2 times [2022-10-17 17:23:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:54,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788474913] [2022-10-17 17:23:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:54,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:23:54,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368931538] [2022-10-17 17:23:54,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:23:54,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:54,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:54,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:23:55,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-17 17:23:55,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:23:55,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:23:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-10-17 17:23:55,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:55,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788474913] [2022-10-17 17:23:55,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:23:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368931538] [2022-10-17 17:23:55,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368931538] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:55,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:55,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:23:55,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604420241] [2022-10-17 17:23:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:55,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:23:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:23:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:55,518 INFO L87 Difference]: Start difference. First operand 471 states and 714 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-10-17 17:23:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:57,197 INFO L93 Difference]: Finished difference Result 894 states and 1373 transitions. [2022-10-17 17:23:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 157 [2022-10-17 17:23:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:57,204 INFO L225 Difference]: With dead ends: 894 [2022-10-17 17:23:57,204 INFO L226 Difference]: Without dead ends: 471 [2022-10-17 17:23:57,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:57,209 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 0 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:57,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2203 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 17:23:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-10-17 17:23:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-10-17 17:23:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (232), 194 states have call predecessors, (232), 193 states have call successors, (232) [2022-10-17 17:23:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 713 transitions. [2022-10-17 17:23:57,243 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 713 transitions. Word has length 157 [2022-10-17 17:23:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:57,244 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 713 transitions. [2022-10-17 17:23:57,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-10-17 17:23:57,245 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 713 transitions. [2022-10-17 17:23:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-10-17 17:23:57,248 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:57,248 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:23:57,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:57,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:57,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1160757588, now seen corresponding path program 3 times [2022-10-17 17:23:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:57,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177615544] [2022-10-17 17:23:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:57,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:57,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:23:57,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885183598] [2022-10-17 17:23:57,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:23:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:57,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:57,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:23:57,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:23:57,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:23:57,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 17:23:57,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:23:58,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:58,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177615544] [2022-10-17 17:23:58,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:23:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885183598] [2022-10-17 17:23:58,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885183598] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:58,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:58,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 17:23:58,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728160926] [2022-10-17 17:23:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:23:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:23:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:23:58,059 INFO L87 Difference]: Start difference. First operand 471 states and 713 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-10-17 17:24:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:24:00,959 INFO L93 Difference]: Finished difference Result 987 states and 1512 transitions. [2022-10-17 17:24:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:24:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 166 [2022-10-17 17:24:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:24:00,967 INFO L225 Difference]: With dead ends: 987 [2022-10-17 17:24:00,967 INFO L226 Difference]: Without dead ends: 560 [2022-10-17 17:24:00,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-17 17:24:00,971 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 100 mSDsluCounter, 3778 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:24:00,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 4144 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-17 17:24:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-10-17 17:24:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 544. [2022-10-17 17:24:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 282 states have (on average 1.2056737588652482) internal successors, (340), 287 states have internal predecessors, (340), 224 states have call successors, (224), 34 states have call predecessors, (224), 36 states have return successors, (275), 222 states have call predecessors, (275), 222 states have call successors, (275) [2022-10-17 17:24:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 839 transitions. [2022-10-17 17:24:01,017 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 839 transitions. Word has length 166 [2022-10-17 17:24:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:24:01,018 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 839 transitions. [2022-10-17 17:24:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-10-17 17:24:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 839 transitions. [2022-10-17 17:24:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-10-17 17:24:01,022 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:24:01,023 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:01,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:24:01,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 17:24:01,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:24:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:24:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -990289880, now seen corresponding path program 4 times [2022-10-17 17:24:01,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:24:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126858281] [2022-10-17 17:24:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:24:01,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:24:01,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:24:01,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191026908] [2022-10-17 17:24:01,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:24:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:24:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:24:01,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:24:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02650ee-1d6e-4fca-b2c4-4fd2aefb344e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:24:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:24:02,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:24:02,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:24:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-10-17 17:24:02,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:24:02,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:24:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126858281] [2022-10-17 17:24:02,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:24:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191026908] [2022-10-17 17:24:02,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191026908] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:24:02,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:24:02,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:24:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876023629] [2022-10-17 17:24:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:24:02,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:24:02,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:24:02,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:24:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:24:02,168 INFO L87 Difference]: Start difference. First operand 544 states and 839 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29)