./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/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 d272ef4205faaf8a4fc383ce66c2e1d6fd3542c1bcb99550bb82ad72fa2d6d83 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:51:59,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:51:59,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:51:59,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:51:59,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:51:59,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:51:59,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:51:59,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:51:59,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:51:59,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:51:59,452 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:51:59,453 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:51:59,453 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:51:59,455 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:51:59,456 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:51:59,456 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:51:59,456 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:51:59,457 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:51:59,457 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:51:59,458 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:51:59,458 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:51:59,459 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:51:59,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:51:59,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:51:59,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:51:59,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:51:59,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:51:59,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:51:59,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:51:59,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:51:59,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:51:59,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:51:59,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:51:59,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:59,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:51:59,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:51:59,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:51:59,467 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:51:59,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:51:59,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:51:59,468 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:51:59,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:51:59,468 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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d272ef4205faaf8a4fc383ce66c2e1d6fd3542c1bcb99550bb82ad72fa2d6d83 [2023-11-12 00:51:59,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:51:59,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:51:59,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:51:59,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:51:59,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:51:59,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i [2023-11-12 00:52:02,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:52:03,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:52:03,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i [2023-11-12 00:52:03,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/data/064feee9f/ab4d94114cd146a3bbe77ef66b7cf83b/FLAG49e93470d [2023-11-12 00:52:03,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/data/064feee9f/ab4d94114cd146a3bbe77ef66b7cf83b [2023-11-12 00:52:03,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:52:03,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:52:03,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:03,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:52:03,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:52:03,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:03" (1/1) ... [2023-11-12 00:52:03,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e344b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:03, skipping insertion in model container [2023-11-12 00:52:03,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:03" (1/1) ... [2023-11-12 00:52:03,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:52:04,062 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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i[4497,4510] [2023-11-12 00:52:04,072 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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i[4557,4570] [2023-11-12 00:52:05,573 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,585 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,586 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,587 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,588 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,607 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,608 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,610 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,611 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,613 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,614 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,615 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:05,616 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,141 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:52:06,142 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:52:06,144 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:52:06,145 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:52:06,147 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:52:06,148 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:52:06,149 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:52:06,149 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:52:06,150 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:52:06,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:52:06,870 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,872 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,911 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,913 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,920 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,922 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,952 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,954 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,955 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,956 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,956 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,957 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:06,958 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:07,086 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:52:07,113 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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i[4497,4510] [2023-11-12 00:52:07,114 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_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness_negated.i[4557,4570] [2023-11-12 00:52:07,178 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,179 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,180 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,180 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,183 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,193 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,195 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,197 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,197 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,199 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,200 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,200 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,201 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,287 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:52:07,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:52:07,290 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:52:07,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:52:07,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:52:07,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:52:07,293 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:52:07,294 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:52:07,295 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:52:07,296 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:52:07,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7553-7564] [2023-11-12 00:52:07,462 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,463 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,473 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,474 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,478 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,479 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,494 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,495 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,496 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,496 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,497 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,498 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,499 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:52:07,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:07,970 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,971 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,971 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,972 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,973 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,973 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,973 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,973 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,973 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,974 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,974 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,974 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,974 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:07,982 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:52:07,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07 WrapperNode [2023-11-12 00:52:07,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:07,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:07,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:52:07,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:52:07,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,258 INFO L138 Inliner]: procedures = 773, calls = 2446, calls flagged for inlining = 71, calls inlined = 16, statements flattened = 713 [2023-11-12 00:52:08,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:08,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:52:08,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:52:08,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:52:08,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:52:08,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:52:08,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:52:08,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:52:08,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (1/1) ... [2023-11-12 00:52:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:08,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:52:08,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:52:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2023-11-12 00:52:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2023-11-12 00:52:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:52:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:52:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:52:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:52:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:52:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:52:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:52:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:52:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:52:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:52:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:52:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:52:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:52:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:52:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:52:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:52:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:52:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:52:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:52:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 00:52:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 00:52:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:52:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:52:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:52:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:52:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:52:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:52:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:52:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-12 00:52:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-12 00:52:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:52:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:52:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:52:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:52:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:52:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:52:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:52:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:52:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:52:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:52:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:52:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:52:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:52:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:52:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:52:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:52:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:52:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:52:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:52:08,925 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:52:08,929 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:52:10,358 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:52:10,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:52:10,620 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:52:10,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:10 BoogieIcfgContainer [2023-11-12 00:52:10,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:52:10,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:52:10,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:52:10,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:52:10,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:52:03" (1/3) ... [2023-11-12 00:52:10,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:10, skipping insertion in model container [2023-11-12 00:52:10,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:07" (2/3) ... [2023-11-12 00:52:10,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:10, skipping insertion in model container [2023-11-12 00:52:10,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:10" (3/3) ... [2023-11-12 00:52:10,656 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clean_up_harness_negated.i [2023-11-12 00:52:10,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:52:10,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:52:10,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:52:10,788 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;@381c085a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:52:10,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:52:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-12 00:52:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 00:52:10,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:10,816 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-12 00:52:10,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1628582090, now seen corresponding path program 1 times [2023-11-12 00:52:10,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619378686] [2023-11-12 00:52:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:10,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:11,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:52:11,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120131636] [2023-11-12 00:52:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:11,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:52:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:11,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:52:11,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:52:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:12,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:52:12,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:52:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:52:12,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:52:12,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619378686] [2023-11-12 00:52:12,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:52:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120131636] [2023-11-12 00:52:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120131636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:52:12,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9651559] [2023-11-12 00:52:12,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:12,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:52:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:12,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:52:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:52:12,474 INFO L87 Difference]: Start difference. First operand has 156 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 00:52:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:13,215 INFO L93 Difference]: Finished difference Result 282 states and 369 transitions. [2023-11-12 00:52:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:52:13,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 94 [2023-11-12 00:52:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:13,235 INFO L225 Difference]: With dead ends: 282 [2023-11-12 00:52:13,236 INFO L226 Difference]: Without dead ends: 157 [2023-11-12 00:52:13,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:52:13,253 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:13,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 668 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:52:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-12 00:52:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-12 00:52:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 90 states have internal predecessors, (103), 47 states have call successors, (47), 19 states have call predecessors, (47), 20 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2023-11-12 00:52:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 197 transitions. [2023-11-12 00:52:13,351 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 197 transitions. Word has length 94 [2023-11-12 00:52:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:13,354 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 197 transitions. [2023-11-12 00:52:13,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 00:52:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 197 transitions. [2023-11-12 00:52:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-12 00:52:13,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:13,369 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-12 00:52:13,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:52:13,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:52:13,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:13,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1705444488, now seen corresponding path program 1 times [2023-11-12 00:52:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:13,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953616700] [2023-11-12 00:52:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:52:16,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:16,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953616700] [2023-11-12 00:52:16,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953616700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:16,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:16,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:52:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829339027] [2023-11-12 00:52:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:52:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:52:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:52:16,486 INFO L87 Difference]: Start difference. First operand 157 states and 197 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:52:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:17,484 INFO L93 Difference]: Finished difference Result 266 states and 338 transitions. [2023-11-12 00:52:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:52:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 98 [2023-11-12 00:52:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:17,494 INFO L225 Difference]: With dead ends: 266 [2023-11-12 00:52:17,494 INFO L226 Difference]: Without dead ends: 159 [2023-11-12 00:52:17,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:52:17,498 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1014 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:52:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-12 00:52:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-12 00:52:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 92 states have internal predecessors, (104), 47 states have call successors, (47), 19 states have call predecessors, (47), 21 states have return successors, (50), 47 states have call predecessors, (50), 46 states have call successors, (50) [2023-11-12 00:52:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 201 transitions. [2023-11-12 00:52:17,539 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 201 transitions. Word has length 98 [2023-11-12 00:52:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:17,541 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 201 transitions. [2023-11-12 00:52:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:52:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 201 transitions. [2023-11-12 00:52:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 00:52:17,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:17,548 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-12 00:52:17,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:52:17,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:17,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1407443114, now seen corresponding path program 1 times [2023-11-12 00:52:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252220681] [2023-11-12 00:52:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:52:19,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:19,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252220681] [2023-11-12 00:52:19,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252220681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:19,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:19,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:52:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329021969] [2023-11-12 00:52:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:52:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:52:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:52:19,270 INFO L87 Difference]: Start difference. First operand 159 states and 201 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:52:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:20,730 INFO L93 Difference]: Finished difference Result 273 states and 349 transitions. [2023-11-12 00:52:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:52:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 104 [2023-11-12 00:52:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:20,735 INFO L225 Difference]: With dead ends: 273 [2023-11-12 00:52:20,735 INFO L226 Difference]: Without dead ends: 164 [2023-11-12 00:52:20,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:52:20,737 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 50 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:20,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 850 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:52:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-12 00:52:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2023-11-12 00:52:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 94 states have internal predecessors, (106), 47 states have call successors, (47), 19 states have call predecessors, (47), 22 states have return successors, (51), 48 states have call predecessors, (51), 46 states have call successors, (51) [2023-11-12 00:52:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 204 transitions. [2023-11-12 00:52:20,773 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 204 transitions. Word has length 104 [2023-11-12 00:52:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:20,774 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 204 transitions. [2023-11-12 00:52:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:52:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 204 transitions. [2023-11-12 00:52:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-12 00:52:20,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:20,777 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-12 00:52:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:52:20,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:20,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash 555425493, now seen corresponding path program 1 times [2023-11-12 00:52:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014628795] [2023-11-12 00:52:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-12 00:52:27,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014628795] [2023-11-12 00:52:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014628795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:27,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-12 00:52:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686961123] [2023-11-12 00:52:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:27,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 00:52:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 00:52:27,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:52:27,034 INFO L87 Difference]: Start difference. First operand 162 states and 204 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 14 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 14 states have call predecessors, (24), 13 states have call successors, (24) [2023-11-12 00:52:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:30,521 INFO L93 Difference]: Finished difference Result 181 states and 223 transitions. [2023-11-12 00:52:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 00:52:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 14 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 14 states have call predecessors, (24), 13 states have call successors, (24) Word has length 108 [2023-11-12 00:52:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:30,524 INFO L225 Difference]: With dead ends: 181 [2023-11-12 00:52:30,524 INFO L226 Difference]: Without dead ends: 162 [2023-11-12 00:52:30,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-12 00:52:30,526 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 161 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:30,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 610 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-12 00:52:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-12 00:52:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-12 00:52:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 92 states have (on average 1.141304347826087) internal successors, (105), 94 states have internal predecessors, (105), 47 states have call successors, (47), 19 states have call predecessors, (47), 22 states have return successors, (51), 48 states have call predecessors, (51), 46 states have call successors, (51) [2023-11-12 00:52:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2023-11-12 00:52:30,558 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 108 [2023-11-12 00:52:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:30,561 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2023-11-12 00:52:30,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 14 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 14 states have call predecessors, (24), 13 states have call successors, (24) [2023-11-12 00:52:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2023-11-12 00:52:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-12 00:52:30,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:30,565 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-11-12 00:52:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:52:30,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:30,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -987753820, now seen corresponding path program 1 times [2023-11-12 00:52:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191149543] [2023-11-12 00:52:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-12 00:52:31,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191149543] [2023-11-12 00:52:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191149543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:31,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:52:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782732113] [2023-11-12 00:52:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:31,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:52:31,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:31,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:52:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:52:31,325 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-12 00:52:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:32,008 INFO L93 Difference]: Finished difference Result 249 states and 310 transitions. [2023-11-12 00:52:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:52:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 125 [2023-11-12 00:52:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:32,011 INFO L225 Difference]: With dead ends: 249 [2023-11-12 00:52:32,011 INFO L226 Difference]: Without dead ends: 162 [2023-11-12 00:52:32,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:52:32,012 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 5 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:32,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 461 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:52:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-12 00:52:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-12 00:52:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 94 states have internal predecessors, (104), 47 states have call successors, (47), 19 states have call predecessors, (47), 22 states have return successors, (51), 48 states have call predecessors, (51), 46 states have call successors, (51) [2023-11-12 00:52:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2023-11-12 00:52:32,031 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 125 [2023-11-12 00:52:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:32,032 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2023-11-12 00:52:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-12 00:52:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2023-11-12 00:52:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 00:52:32,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:32,035 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 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, 1] [2023-11-12 00:52:32,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:52:32,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:32,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1209255364, now seen corresponding path program 1 times [2023-11-12 00:52:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350931155] [2023-11-12 00:52:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:32,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-12 00:52:33,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:33,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350931155] [2023-11-12 00:52:33,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350931155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:52:33,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776821151] [2023-11-12 00:52:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:33,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:52:33,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:33,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:52:33,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afc9e69-1bf0-4ef7-852e-ff2e37e694cc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:52:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:34,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 00:52:34,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:52:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 00:52:34,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:52:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-12 00:52:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776821151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:52:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1502449977] [2023-11-12 00:52:35,142 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2023-11-12 00:52:35,143 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:52:35,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:52:35,154 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:52:35,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs