./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire --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 21c2d89ba952d07e377b7cc6f67ade412305d7778f1617e1e9b402d84365e011 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:06,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:06,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:16:06,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:06,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:06,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:06,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:06,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:06,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:06,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:06,747 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:06,747 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:06,748 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:06,750 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:06,750 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:06,750 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:06,751 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:06,751 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:06,752 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:06,752 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:06,752 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:06,753 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:06,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:06,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:06,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:06,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:06,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:06,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:06,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:06,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:06,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:06,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:06,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:06,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:06,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:06,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:06,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:06,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:06,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:06,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:06,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:06,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:06,766 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:06,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:06,766 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21c2d89ba952d07e377b7cc6f67ade412305d7778f1617e1e9b402d84365e011 [2023-11-23 21:16:07,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:07,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:07,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:07,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:07,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:07,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i [2023-11-23 21:16:10,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:10,949 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:10,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i [2023-11-23 21:16:10,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/data/610cdfcb6/2491b620aa834461844e6e09aa6e9936/FLAGceb734c6f [2023-11-23 21:16:11,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/data/610cdfcb6/2491b620aa834461844e6e09aa6e9936 [2023-11-23 21:16:11,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:11,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:11,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:11,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:11,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:11,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:11" (1/1) ... [2023-11-23 21:16:11,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5703fb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:11, skipping insertion in model container [2023-11-23 21:16:11,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:11" (1/1) ... [2023-11-23 21:16:11,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:11,561 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4493,4506] [2023-11-23 21:16:11,571 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4553,4566] [2023-11-23 21:16:12,923 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,924 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,924 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,925 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,927 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,946 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,956 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:12,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:13,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:16:13,642 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:16:13,644 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:16:13,645 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:16:13,650 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:16:13,651 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:16:13,653 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:16:13,654 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:16:13,655 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:16:13,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:16:14,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,291 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,318 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,320 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,320 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,321 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,321 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:14,438 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:14,462 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4493,4506] [2023-11-23 21:16:14,463 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_ac43764e-d228-46a3-8a96-8bd5cfd007c1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4553,4566] [2023-11-23 21:16:14,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,526 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,537 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,537 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,538 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,539 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,540 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,580 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:16:14,581 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:16:14,581 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:16:14,583 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:16:14,584 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:16:14,586 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:16:14,586 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:16:14,587 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:16:14,588 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:16:14,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:16:14,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-23 21:16:14,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:16:14,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:15,212 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,212 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,213 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,213 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,213 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,213 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,213 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,214 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,215 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,215 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,215 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,215 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,215 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:15,223 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:15,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15 WrapperNode [2023-11-23 21:16:15,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:15,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:15,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:15,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:15,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,500 INFO L138 Inliner]: procedures = 772, calls = 2456, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 860 [2023-11-23 21:16:15,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:15,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:15,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:15,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:15,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:15,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:15,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:15,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:15,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (1/1) ... [2023-11-23 21:16:15,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:15,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:15,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:15,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:16:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:16:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:16:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:16:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:16:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:16:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 21:16:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 21:16:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:16:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:16:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:16:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:16:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:16:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:16:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:16:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 21:16:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 21:16:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:16:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:16:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:16:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2023-11-23 21:16:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2023-11-23 21:16:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:16:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-23 21:16:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-23 21:16:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 21:16:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 21:16:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-23 21:16:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-23 21:16:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-23 21:16:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-23 21:16:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:16:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 21:16:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 21:16:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-23 21:16:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-23 21:16:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-23 21:16:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-23 21:16:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-23 21:16:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-23 21:16:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 21:16:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 21:16:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:16:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:16:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:16:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 21:16:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 21:16:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-23 21:16:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-23 21:16:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:16:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:16:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:16,220 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:16,223 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:16,389 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-23 21:16:16,467 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-23 21:16:16,766 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2023-11-23 21:16:17,434 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:17,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:17,738 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-23 21:16:17,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:17 BoogieIcfgContainer [2023-11-23 21:16:17,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:17,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:17,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:17,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:17,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:11" (1/3) ... [2023-11-23 21:16:17,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dae305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:17, skipping insertion in model container [2023-11-23 21:16:17,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:15" (2/3) ... [2023-11-23 21:16:17,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dae305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:17, skipping insertion in model container [2023-11-23 21:16:17,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:17" (3/3) ... [2023-11-23 21:16:17,748 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness_negated.i [2023-11-23 21:16:17,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:17,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:17,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:17,853 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;@3867029c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:17,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 109 states have internal predecessors, (134), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-23 21:16:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 21:16:17,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:17,888 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:17,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:17,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 826839768, now seen corresponding path program 1 times [2023-11-23 21:16:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:17,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936511088] [2023-11-23 21:16:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:18,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964950530] [2023-11-23 21:16:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:18,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:18,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:18,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:19,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:16:19,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 21:16:19,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:19,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936511088] [2023-11-23 21:16:19,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964950530] [2023-11-23 21:16:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964950530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:19,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:16:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187402477] [2023-11-23 21:16:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:16:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:16:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:19,480 INFO L87 Difference]: Start difference. First operand has 200 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 109 states have internal predecessors, (134), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 21:16:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:20,121 INFO L93 Difference]: Finished difference Result 396 states and 554 transitions. [2023-11-23 21:16:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:16:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 131 [2023-11-23 21:16:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:20,143 INFO L225 Difference]: With dead ends: 396 [2023-11-23 21:16:20,143 INFO L226 Difference]: Without dead ends: 202 [2023-11-23 21:16:20,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:16:20,164 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:20,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 912 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-23 21:16:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-11-23 21:16:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 110 states have (on average 1.190909090909091) internal successors, (131), 111 states have internal predecessors, (131), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2023-11-23 21:16:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 267 transitions. [2023-11-23 21:16:20,237 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 267 transitions. Word has length 131 [2023-11-23 21:16:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:20,239 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 267 transitions. [2023-11-23 21:16:20,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 21:16:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 267 transitions. [2023-11-23 21:16:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 21:16:20,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:20,248 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:20,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:20,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:16:20,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:20,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1483864248, now seen corresponding path program 1 times [2023-11-23 21:16:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436405891] [2023-11-23 21:16:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-23 21:16:23,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436405891] [2023-11-23 21:16:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436405891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730707041] [2023-11-23 21:16:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:23,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:23,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:23,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:23,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:16:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:24,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:16:24,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:24,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-11-23 21:16:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 21:16:24,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730707041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:24,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:16:24,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2023-11-23 21:16:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037398002] [2023-11-23 21:16:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:24,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:16:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:16:24,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:16:24,898 INFO L87 Difference]: Start difference. First operand 202 states and 267 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 21:16:28,408 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] [2023-11-23 21:16:30,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:32,572 WARN L539 Checker$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] [2023-11-23 21:16:34,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:36,663 WARN L539 Checker$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] [2023-11-23 21:16:38,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:41,210 WARN L539 Checker$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] [2023-11-23 21:16:43,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:45,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:47,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 21:16:49,309 WARN L539 Checker$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] [2023-11-23 21:16:51,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:53,433 WARN L539 Checker$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] [2023-11-23 21:16:55,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:16:57,878 WARN L539 Checker$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] [2023-11-23 21:16:59,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:17:02,004 WARN L539 Checker$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] [2023-11-23 21:17:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:02,199 INFO L93 Difference]: Finished difference Result 441 states and 571 transitions. [2023-11-23 21:17:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:17:02,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 139 [2023-11-23 21:17:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:02,205 INFO L225 Difference]: With dead ends: 441 [2023-11-23 21:17:02,205 INFO L226 Difference]: Without dead ends: 255 [2023-11-23 21:17:02,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:17:02,207 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 59 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 15 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:02,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1671 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 552 Invalid, 17 Unknown, 0 Unchecked, 37.1s Time] [2023-11-23 21:17:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-23 21:17:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2023-11-23 21:17:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 141 states have internal predecessors, (165), 79 states have call successors, (79), 33 states have call predecessors, (79), 34 states have return successors, (82), 79 states have call predecessors, (82), 78 states have call successors, (82) [2023-11-23 21:17:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 326 transitions. [2023-11-23 21:17:02,251 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 326 transitions. Word has length 139 [2023-11-23 21:17:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:02,252 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 326 transitions. [2023-11-23 21:17:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 21:17:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 326 transitions. [2023-11-23 21:17:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 21:17:02,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:02,261 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:02,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:02,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:02,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:02,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2124396498, now seen corresponding path program 1 times [2023-11-23 21:17:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922093751] [2023-11-23 21:17:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:02,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:02,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922093751] [2023-11-23 21:17:02,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:17:02,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208146797] [2023-11-23 21:17:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:02,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:02,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:02,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:02,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:17:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:03,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:17:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-23 21:17:03,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208146797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:17:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679800343] [2023-11-23 21:17:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:17:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:17:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:17:03,407 INFO L87 Difference]: Start difference. First operand 254 states and 326 transitions. Second operand has 8 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-23 21:17:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:04,233 INFO L93 Difference]: Finished difference Result 451 states and 585 transitions. [2023-11-23 21:17:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:17:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 150 [2023-11-23 21:17:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:04,237 INFO L225 Difference]: With dead ends: 451 [2023-11-23 21:17:04,238 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 21:17:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:17:04,240 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:04,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1446 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:17:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 21:17:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2023-11-23 21:17:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 141 states have internal predecessors, (164), 79 states have call successors, (79), 33 states have call predecessors, (79), 34 states have return successors, (82), 79 states have call predecessors, (82), 78 states have call successors, (82) [2023-11-23 21:17:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 325 transitions. [2023-11-23 21:17:04,289 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 325 transitions. Word has length 150 [2023-11-23 21:17:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 325 transitions. [2023-11-23 21:17:04,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-23 21:17:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 325 transitions. [2023-11-23 21:17:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 21:17:04,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:04,294 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:04,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:04,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:04,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1192918645, now seen corresponding path program 1 times [2023-11-23 21:17:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122204215] [2023-11-23 21:17:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:04,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:17:04,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609491010] [2023-11-23 21:17:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:04,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:04,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:04,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac43764e-d228-46a3-8a96-8bd5cfd007c1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:17:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:05,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 153 conjunts are in the unsatisfiable core [2023-11-23 21:17:05,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:05,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:17:05,887 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 21:17:05,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 21:17:05,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 21:17:06,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2023-11-23 21:17:06,581 INFO L349 Elim1Store]: treesize reduction 138, result has 35.2 percent of original size [2023-11-23 21:17:06,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 73 treesize of output 156