./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_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_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/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_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/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_f0f03f89-40c7-4489-abb7-f4f19c14e657/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:03,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:03,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 01:02:03,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:03,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:03,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:03,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:03,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:03,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:03,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:03,850 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:03,851 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:03,851 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:03,853 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:03,854 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:03,854 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:03,855 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:03,855 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:03,856 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:03,856 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:03,857 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:03,857 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:03,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:03,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:02:03,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:03,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:03,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:02:03,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:03,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:02:03,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:02:03,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:03,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:03,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:03,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:03,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:03,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:03,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:02:03,865 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:03,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:03,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:02:03,866 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:03,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:03,866 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_f0f03f89-40c7-4489-abb7-f4f19c14e657/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2023-11-12 01:02:04,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:04,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:04,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:04,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:04,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:04,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2023-11-12 01:02:07,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:02:08,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:02:08,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2023-11-12 01:02:08,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/data/fdd959b3b/4701d1198902444c850f8cd01a63c294/FLAGacb708f22 [2023-11-12 01:02:08,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/data/fdd959b3b/4701d1198902444c850f8cd01a63c294 [2023-11-12 01:02:08,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:02:08,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:02:08,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:08,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:02:08,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:02:08,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:08" (1/1) ... [2023-11-12 01:02:08,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6cec24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:08, skipping insertion in model container [2023-11-12 01:02:08,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:08" (1/1) ... [2023-11-12 01:02:08,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:02:08,788 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_f0f03f89-40c7-4489-abb7-f4f19c14e657/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2023-11-12 01:02:08,798 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_f0f03f89-40c7-4489-abb7-f4f19c14e657/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2023-11-12 01:02:10,280 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,282 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,286 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,288 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,289 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,309 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,313 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,318 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,320 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,323 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,327 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:10,869 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:02:10,871 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:02:10,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:02:10,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:02:10,875 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:02:10,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:02:10,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:02:10,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:02:10,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:02:10,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:02:11,464 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,465 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,489 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,490 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,496 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,497 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,512 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,513 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,514 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,514 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,515 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,515 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,516 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:11,590 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:02:11,613 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_f0f03f89-40c7-4489-abb7-f4f19c14e657/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2023-11-12 01:02:11,617 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_f0f03f89-40c7-4489-abb7-f4f19c14e657/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2023-11-12 01:02:11,679 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,679 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,680 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,680 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,683 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,698 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,698 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,699 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,700 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,701 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,701 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,702 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,702 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:11,744 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:02:11,745 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:02:11,746 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:02:11,747 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:02:11,748 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:02:11,748 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:02:11,749 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:02:11,750 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:02:11,751 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:02:11,752 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:02:11,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2023-11-12 01:02:12,010 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,011 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,019 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,022 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,023 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,031 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,032 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,033 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,033 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,034 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,034 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,034 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:02:12,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:12,461 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,461 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,461 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,461 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,461 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,462 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,462 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,462 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,462 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,462 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,463 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,464 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,464 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:12,472 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:02:12,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12 WrapperNode [2023-11-12 01:02:12,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:12,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:12,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:02:12,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:02:12,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,771 INFO L138 Inliner]: procedures = 773, calls = 2500, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1094 [2023-11-12 01:02:12,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:12,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:02:12,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:02:12,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:02:12,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:02:12,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:02:12,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:02:12,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:02:12,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (1/1) ... [2023-11-12 01:02:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:12,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:12,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:02:13,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:02:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 01:02:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 01:02:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 01:02:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-12 01:02:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:02:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 01:02:13,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 01:02:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:02:13,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:02:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 01:02:13,043 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 01:02:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:02:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:02:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:02:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:02:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:02:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 01:02:13,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 01:02:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 01:02:13,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 01:02:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 01:02:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:02:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 01:02:13,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 01:02:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:02:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 01:02:13,047 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 01:02:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:02:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-12 01:02:13,048 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-12 01:02:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-12 01:02:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-12 01:02:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 01:02:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 01:02:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-12 01:02:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-12 01:02:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-12 01:02:13,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-12 01:02:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:02:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 01:02:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 01:02:13,050 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 01:02:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 01:02:13,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 01:02:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-12 01:02:13,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-12 01:02:13,054 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-12 01:02:13,055 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-12 01:02:13,055 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-12 01:02:13,055 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-12 01:02:13,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 01:02:13,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 01:02:13,056 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 01:02:13,056 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 01:02:13,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:02:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 01:02:13,058 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 01:02:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 01:02:13,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 01:02:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 01:02:13,063 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 01:02:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2023-11-12 01:02:13,064 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2023-11-12 01:02:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-12 01:02:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-12 01:02:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-12 01:02:13,071 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-12 01:02:13,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:02:13,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:02:13,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:02:13,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:02:13,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:02:13,859 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2023-11-12 01:02:13,859 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2023-11-12 01:02:13,890 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-12 01:02:13,933 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 01:02:16,140 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !true; [2023-11-12 01:02:16,140 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 01:02:16,188 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:02:16,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:02:16,527 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-12 01:02:16,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:16 BoogieIcfgContainer [2023-11-12 01:02:16,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:02:16,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:02:16,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:02:16,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:02:16,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:02:08" (1/3) ... [2023-11-12 01:02:16,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe885a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:16, skipping insertion in model container [2023-11-12 01:02:16,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:12" (2/3) ... [2023-11-12 01:02:16,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe885a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:16, skipping insertion in model container [2023-11-12 01:02:16,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:16" (3/3) ... [2023-11-12 01:02:16,546 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2023-11-12 01:02:16,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:02:16,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:02:16,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:02:16,656 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;@70fd4608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:02:16,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:02:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-12 01:02:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 01:02:16,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:16,682 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:16,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:16,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash -560452287, now seen corresponding path program 1 times [2023-11-12 01:02:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:16,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10208826] [2023-11-12 01:02:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:16,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:17,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:02:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54284953] [2023-11-12 01:02:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:17,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:17,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:17,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:17,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:02:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:18,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 01:02:18,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-12 01:02:18,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:02:18,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10208826] [2023-11-12 01:02:18,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:02:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54284953] [2023-11-12 01:02:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54284953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:02:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561889616] [2023-11-12 01:02:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:02:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:02:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:18,459 INFO L87 Difference]: Start difference. First operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 01:02:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:19,168 INFO L93 Difference]: Finished difference Result 488 states and 698 transitions. [2023-11-12 01:02:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:02:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 127 [2023-11-12 01:02:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:19,195 INFO L225 Difference]: With dead ends: 488 [2023-11-12 01:02:19,195 INFO L226 Difference]: Without dead ends: 259 [2023-11-12 01:02:19,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 01:02:19,217 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:19,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1200 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 01:02:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-12 01:02:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-11-12 01:02:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 145 states have internal predecessors, (170), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2023-11-12 01:02:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2023-11-12 01:02:19,337 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 127 [2023-11-12 01:02:19,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:19,339 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2023-11-12 01:02:19,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 01:02:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2023-11-12 01:02:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 01:02:19,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:19,350 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:19,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 01:02:19,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 698313897, now seen corresponding path program 1 times [2023-11-12 01:02:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790123930] [2023-11-12 01:02:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-12 01:02:22,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:22,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790123930] [2023-11-12 01:02:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790123930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:02:22,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657847063] [2023-11-12 01:02:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:22,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:22,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:22,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:22,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f03f89-40c7-4489-abb7-f4f19c14e657/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:02:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:23,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 01:02:23,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:23,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-12 01:02:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-12 01:02:24,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:02:24,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657847063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:24,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:02:24,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2023-11-12 01:02:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605925430] [2023-11-12 01:02:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:24,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:02:24,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:02:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-12 01:02:24,086 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-12 01:02:27,429 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=true, quantifiers [0] [2023-11-12 01:02:29,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:31,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:33,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:35,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:37,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:40,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:42,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:44,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:46,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:49,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:51,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:54,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:56,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:02:58,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:03:00,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:03:02,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:03:04,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 01:03:06,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]