./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:05,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:05,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:56:05,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:05,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:05,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:05,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:05,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:05,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:05,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:05,536 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:05,536 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:05,537 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:05,538 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:05,538 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:05,539 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:05,540 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:05,540 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:05,541 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:05,542 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:05,542 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:05,543 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:05,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:05,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:05,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:05,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:05,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:05,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:05,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:05,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:05,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:05,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:05,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:05,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:05,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:05,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:05,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:05,556 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:05,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:05,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:05,557 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:05,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:05,558 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 [2023-11-12 00:56:05,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:05,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:05,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:05,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:05,888 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:05,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2023-11-12 00:56:09,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:09,983 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:09,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2023-11-12 00:56:10,038 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/data/c18b533e4/529954979a2c4ee0a2adf13e3ba276c8/FLAGb60b2118a [2023-11-12 00:56:10,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/data/c18b533e4/529954979a2c4ee0a2adf13e3ba276c8 [2023-11-12 00:56:10,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:10,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:10,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:10,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:10,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:10,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:10" (1/1) ... [2023-11-12 00:56:10,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d06ebf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:10, skipping insertion in model container [2023-11-12 00:56:10,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:10" (1/1) ... [2023-11-12 00:56:10,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:10,640 WARN L240 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_fc6c5a28-090a-4637-9592-5e33a1cf39c5/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2023-11-12 00:56:10,652 WARN L240 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_fc6c5a28-090a-4637-9592-5e33a1cf39c5/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2023-11-12 00:56:12,156 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,157 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,158 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,159 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,161 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,178 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,179 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,181 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,182 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,185 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,187 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,188 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,189 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:12,874 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:56:12,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:56:12,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:56:12,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:56:12,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:56:12,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:56:12,883 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:56:12,884 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:56:12,885 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:56:12,885 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:56:13,519 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,520 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,548 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,549 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,561 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,561 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,590 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,592 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,592 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,593 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,594 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,595 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,595 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:13,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:13,741 WARN L240 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_fc6c5a28-090a-4637-9592-5e33a1cf39c5/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2023-11-12 00:56:13,741 WARN L240 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_fc6c5a28-090a-4637-9592-5e33a1cf39c5/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2023-11-12 00:56:13,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,790 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,790 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,798 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,799 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,800 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,801 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,802 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,803 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,804 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,804 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:13,834 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:56:13,835 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:56:13,836 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:56:13,837 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:56:13,838 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:56:13,839 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:56:13,839 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:56:13,840 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:56:13,840 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:56:13,841 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:56:13,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2023-11-12 00:56:14,028 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,031 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,043 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,046 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,050 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,068 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,071 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,072 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,072 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,073 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,074 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,075 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:14,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:14,455 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,455 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,456 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,457 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,458 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,458 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,458 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,458 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:14,466 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:14,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14 WrapperNode [2023-11-12 00:56:14,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:14,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:14,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:14,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:14,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,774 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 70, calls inlined = 25, statements flattened = 1457 [2023-11-12 00:56:14,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:14,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:14,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:14,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:14,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:14,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:14,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:14,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:14,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:15,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (1/1) ... [2023-11-12 00:56:15,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:15,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:15,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:56:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:56:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:56:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-12 00:56:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:56:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:56:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:56:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:56:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:56:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:56:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:56:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:56:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:56:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-12 00:56:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-12 00:56:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:56:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:56:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:56:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:56:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:56:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 00:56:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 00:56:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:56:15,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:56:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:56:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:56:15,090 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:56:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:56:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-12 00:56:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-12 00:56:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:56:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:56:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-12 00:56:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-12 00:56:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-12 00:56:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-12 00:56:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:56:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:56:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 00:56:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 00:56:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:56:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-12 00:56:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-12 00:56:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-12 00:56:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:56:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:56:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:56:15,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:56:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:56:15,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:56:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-12 00:56:15,097 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-12 00:56:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-12 00:56:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-12 00:56:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:56:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:56:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:56:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:56:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:56:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:56:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:56:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:56:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:56:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-12 00:56:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-12 00:56:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:56:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:56:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:15,665 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:15,667 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:16,029 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-12 00:56:16,081 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 00:56:17,079 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-12 00:56:17,079 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-12 00:56:18,782 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:19,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:19,503 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 00:56:19,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:19 BoogieIcfgContainer [2023-11-12 00:56:19,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:19,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:19,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:19,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:19,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:10" (1/3) ... [2023-11-12 00:56:19,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2a21f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:19, skipping insertion in model container [2023-11-12 00:56:19,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:14" (2/3) ... [2023-11-12 00:56:19,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2a21f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:19, skipping insertion in model container [2023-11-12 00:56:19,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:19" (3/3) ... [2023-11-12 00:56:19,516 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness.i [2023-11-12 00:56:19,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:19,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:19,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:19,606 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=LoopHeads, 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;@517ea74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:19,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 173 states have (on average 1.260115606936416) internal successors, (218), 170 states have internal predecessors, (218), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-12 00:56:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 00:56:19,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:19,628 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 00:56:19,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:19,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1494919129, now seen corresponding path program 1 times [2023-11-12 00:56:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:19,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862989287] [2023-11-12 00:56:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:20,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087795988] [2023-11-12 00:56:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:20,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:20,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:56:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:21,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:56:21,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-12 00:56:21,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:21,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:21,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862989287] [2023-11-12 00:56:21,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087795988] [2023-11-12 00:56:21,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087795988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:21,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:56:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71336264] [2023-11-12 00:56:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:21,448 INFO L87 Difference]: Start difference. First operand has 286 states, 173 states have (on average 1.260115606936416) internal successors, (218), 170 states have internal predecessors, (218), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 00:56:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:25,480 INFO L93 Difference]: Finished difference Result 568 states and 799 transitions. [2023-11-12 00:56:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:56:25,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 95 [2023-11-12 00:56:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:25,498 INFO L225 Difference]: With dead ends: 568 [2023-11-12 00:56:25,498 INFO L226 Difference]: Without dead ends: 288 [2023-11-12 00:56:25,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:56:25,509 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:25,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1324 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 00:56:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-12 00:56:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-12 00:56:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 171 states have (on average 1.239766081871345) internal successors, (212), 172 states have internal predecessors, (212), 86 states have call successors, (86), 29 states have call predecessors, (86), 30 states have return successors, (89), 86 states have call predecessors, (89), 85 states have call successors, (89) [2023-11-12 00:56:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 387 transitions. [2023-11-12 00:56:25,597 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 387 transitions. Word has length 95 [2023-11-12 00:56:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:25,598 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 387 transitions. [2023-11-12 00:56:25,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 00:56:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 387 transitions. [2023-11-12 00:56:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 00:56:25,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:25,604 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1] [2023-11-12 00:56:25,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:25,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6c5a28-090a-4637-9592-5e33a1cf39c5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:25,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:25,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1954906675, now seen corresponding path program 1 times [2023-11-12 00:56:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172130627] [2023-11-12 00:56:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-12 00:56:27,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172130627] [2023-11-12 00:56:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172130627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:27,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:27,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:56:27,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204985777] [2023-11-12 00:56:27,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:27,595 INFO L87 Difference]: Start difference. First operand 288 states and 387 transitions. Second operand has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:56:31,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:33,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:35,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:37,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:39,338 INFO L93 Difference]: Finished difference Result 539 states and 727 transitions. [2023-11-12 00:56:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:56:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 99 [2023-11-12 00:56:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:39,346 INFO L225 Difference]: With dead ends: 539 [2023-11-12 00:56:39,346 INFO L226 Difference]: Without dead ends: 290 [2023-11-12 00:56:39,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:39,352 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 0 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:39,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1230 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 4 Unknown, 0 Unchecked, 11.7s Time] [2023-11-12 00:56:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-12 00:56:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-12 00:56:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 172 states have (on average 1.2383720930232558) internal successors, (213), 174 states have internal predecessors, (213), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-12 00:56:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 394 transitions. [2023-11-12 00:56:39,395 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 394 transitions. Word has length 99 [2023-11-12 00:56:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:39,396 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 394 transitions. [2023-11-12 00:56:39,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:56:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 394 transitions. [2023-11-12 00:56:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:56:39,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:39,400 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1] [2023-11-12 00:56:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:56:39,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:39,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1768609821, now seen corresponding path program 1 times [2023-11-12 00:56:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572815143] [2023-11-12 00:56:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 00:56:41,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572815143] [2023-11-12 00:56:41,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572815143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:41,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:41,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:56:41,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862324194] [2023-11-12 00:56:41,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:41,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:41,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:41,748 INFO L87 Difference]: Start difference. First operand 290 states and 394 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-12 00:56:45,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:47,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:49,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:51,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:53,513 INFO L93 Difference]: Finished difference Result 296 states and 399 transitions. [2023-11-12 00:56:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:56:53,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 103 [2023-11-12 00:56:53,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:53,519 INFO L225 Difference]: With dead ends: 296 [2023-11-12 00:56:53,520 INFO L226 Difference]: Without dead ends: 294 [2023-11-12 00:56:53,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:56:53,522 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 5 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:53,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1305 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 4 Unknown, 0 Unchecked, 11.7s Time] [2023-11-12 00:56:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-12 00:56:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-12 00:56:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 175 states have (on average 1.2342857142857142) internal successors, (216), 177 states have internal predecessors, (216), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-12 00:56:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 397 transitions. [2023-11-12 00:56:53,561 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 397 transitions. Word has length 103 [2023-11-12 00:56:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:53,562 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 397 transitions. [2023-11-12 00:56:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-12 00:56:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 397 transitions. [2023-11-12 00:56:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-12 00:56:53,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:53,566 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:53,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:56:53,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:53,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2000538839, now seen corresponding path program 1 times [2023-11-12 00:56:53,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:53,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682484771] [2023-11-12 00:56:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:53,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 00:56:56,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682484771] [2023-11-12 00:56:56,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682484771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:56,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:56,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:56:56,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278338232] [2023-11-12 00:56:56,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:56:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:56:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:56:56,415 INFO L87 Difference]: Start difference. First operand 294 states and 397 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 00:57:02,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []