./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/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_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/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_76b87113-54e0-4ffa-931c-0439751a9e32/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 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:45:14,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:45:14,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:45:14,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:45:14,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:45:14,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:45:14,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:45:14,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:45:14,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:45:14,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:45:14,249 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:45:14,249 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:45:14,250 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:45:14,251 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:45:14,251 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:45:14,252 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:45:14,252 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:45:14,253 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:45:14,254 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:45:14,254 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:45:14,255 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:45:14,255 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:45:14,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:45:14,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:45:14,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:45:14,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:45:14,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:45:14,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:45:14,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:45:14,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:45:14,260 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:45:14,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:45:14,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:45:14,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:14,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:45:14,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:45:14,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:45:14,262 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:45:14,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:45:14,263 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:45:14,263 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:45:14,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:45:14,264 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_76b87113-54e0-4ffa-931c-0439751a9e32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2023-11-12 00:45:14,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:45:14,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:45:14,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:45:14,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:45:14,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:45:14,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2023-11-12 00:45:17,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:45:18,292 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:45:18,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2023-11-12 00:45:18,336 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/data/c0d84ccab/f3dcc93a24ef4839a06633bb1eda9488/FLAG1f280a5ab [2023-11-12 00:45:18,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/data/c0d84ccab/f3dcc93a24ef4839a06633bb1eda9488 [2023-11-12 00:45:18,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:45:18,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:45:18,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:18,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:45:18,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:45:18,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:18" (1/1) ... [2023-11-12 00:45:18,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9899df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:18, skipping insertion in model container [2023-11-12 00:45:18,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:18" (1/1) ... [2023-11-12 00:45:18,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:45:18,839 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_76b87113-54e0-4ffa-931c-0439751a9e32/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2023-11-12 00:45:18,849 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_76b87113-54e0-4ffa-931c-0439751a9e32/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2023-11-12 00:45:20,126 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,131 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,132 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,134 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,142 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,206 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,207 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,209 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,209 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,211 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,213 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,213 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,214 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:20,883 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:45:20,885 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:45:20,887 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:45:20,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:45:20,894 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:45:20,896 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:45:20,897 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:45:20,898 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:45:20,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:45:20,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:45:21,518 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,521 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,563 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,568 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,576 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,577 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,596 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,597 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,597 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,598 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,598 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,598 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,599 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:21,711 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:45:21,735 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_76b87113-54e0-4ffa-931c-0439751a9e32/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2023-11-12 00:45:21,735 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_76b87113-54e0-4ffa-931c-0439751a9e32/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2023-11-12 00:45:21,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,793 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,793 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,802 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,803 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,807 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,807 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,809 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,809 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,810 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,810 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:21,846 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:45:21,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:45:21,848 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:45:21,849 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:45:21,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:45:21,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:45:21,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:45:21,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:45:21,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:45:21,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:45:21,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-12 00:45:22,043 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,043 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,052 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,055 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,056 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,070 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,070 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,071 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,071 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,072 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,073 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,074 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:45:22,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:22,415 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,415 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,416 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,416 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,416 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,416 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,416 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,417 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,417 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,417 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,417 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,417 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,418 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:22,427 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:45:22,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22 WrapperNode [2023-11-12 00:45:22,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:22,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:22,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:45:22,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:45:22,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,690 INFO L138 Inliner]: procedures = 772, calls = 2434, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 607 [2023-11-12 00:45:22,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:22,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:45:22,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:45:22,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:45:22,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:45:22,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:45:22,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:45:22,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:45:22,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (1/1) ... [2023-11-12 00:45:22,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:22,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:45:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:45:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:45:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:45:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:45:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:45:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:45:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:45:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:45:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:45:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:45:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:45:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:45:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:45:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:45:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:45:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:45:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:45:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:45:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:45:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:45:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:45:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:45:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:45:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:45:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2023-11-12 00:45:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2023-11-12 00:45:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:45:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:45:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:45:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:45:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:45:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:45:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:45:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:45:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:45:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:45:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:45:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:45:23,301 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:45:23,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:45:24,477 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:45:24,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:45:24,688 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:45:24,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:24 BoogieIcfgContainer [2023-11-12 00:45:24,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:45:24,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:45:24,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:45:24,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:45:24,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:45:18" (1/3) ... [2023-11-12 00:45:24,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:24, skipping insertion in model container [2023-11-12 00:45:24,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:22" (2/3) ... [2023-11-12 00:45:24,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:24, skipping insertion in model container [2023-11-12 00:45:24,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:24" (3/3) ... [2023-11-12 00:45:24,707 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2023-11-12 00:45:24,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:45:24,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:45:24,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:45:24,809 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;@55fad95f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:45:24,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:45:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 49 states have (on average 1.163265306122449) internal successors, (57), 50 states have internal predecessors, (57), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-12 00:45:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:45:24,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:24,831 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-12 00:45:24,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:24,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1099371283, now seen corresponding path program 1 times [2023-11-12 00:45:24,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:24,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335574080] [2023-11-12 00:45:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:25,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:45:25,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610922096] [2023-11-12 00:45:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:25,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:25,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:25,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:25,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:45:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:26,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:45:26,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:45:26,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:45:26,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335574080] [2023-11-12 00:45:26,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:45:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610922096] [2023-11-12 00:45:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610922096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:45:26,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:45:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46106232] [2023-11-12 00:45:26,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:45:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:45:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:45:26,193 INFO L87 Difference]: Start difference. First operand has 91 states, 49 states have (on average 1.163265306122449) internal successors, (57), 50 states have internal predecessors, (57), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:45:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:26,604 INFO L93 Difference]: Finished difference Result 176 states and 214 transitions. [2023-11-12 00:45:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:45:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 80 [2023-11-12 00:45:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:26,617 INFO L225 Difference]: With dead ends: 176 [2023-11-12 00:45:26,617 INFO L226 Difference]: Without dead ends: 93 [2023-11-12 00:45:26,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 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 00:45:26,625 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:26,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 348 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:45:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-12 00:45:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-12 00:45:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 52 states have internal predecessors, (58), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-12 00:45:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2023-11-12 00:45:26,678 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 80 [2023-11-12 00:45:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:26,679 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2023-11-12 00:45:26,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:45:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2023-11-12 00:45:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 00:45:26,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:26,686 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-12 00:45:26,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:26,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:45:26,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:26,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 779654373, now seen corresponding path program 1 times [2023-11-12 00:45:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956774864] [2023-11-12 00:45:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-12 00:45:29,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956774864] [2023-11-12 00:45:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956774864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:29,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:45:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:45:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612479860] [2023-11-12 00:45:29,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:45:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:45:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:45:29,462 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 00:45:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:29,942 INFO L93 Difference]: Finished difference Result 168 states and 196 transitions. [2023-11-12 00:45:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:45:29,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 88 [2023-11-12 00:45:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:29,946 INFO L225 Difference]: With dead ends: 168 [2023-11-12 00:45:29,947 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:45:29,948 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 00:45:29,955 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:29,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 380 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:45:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:45:29,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-12 00:45:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 54 states have internal predecessors, (59), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-12 00:45:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2023-11-12 00:45:29,979 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 88 [2023-11-12 00:45:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:29,981 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2023-11-12 00:45:29,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 00:45:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2023-11-12 00:45:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 00:45:29,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:29,990 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-12 00:45:29,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:45:29,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:29,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1709315930, now seen corresponding path program 1 times [2023-11-12 00:45:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573662772] [2023-11-12 00:45:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-12 00:45:31,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573662772] [2023-11-12 00:45:31,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573662772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:45:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:45:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567613879] [2023-11-12 00:45:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:45:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:45:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:45:31,437 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:45:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:32,180 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2023-11-12 00:45:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:45:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 94 [2023-11-12 00:45:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:32,184 INFO L225 Difference]: With dead ends: 175 [2023-11-12 00:45:32,184 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:45:32,185 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 00:45:32,186 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 17 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:32,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 523 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:45:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:45:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-12 00:45:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-12 00:45:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2023-11-12 00:45:32,203 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 94 [2023-11-12 00:45:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:32,204 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2023-11-12 00:45:32,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:45:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2023-11-12 00:45:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-12 00:45:32,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:32,206 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-12 00:45:32,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:45:32,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:32,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -117410879, now seen corresponding path program 1 times [2023-11-12 00:45:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918358124] [2023-11-12 00:45:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-12 00:45:33,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:33,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918358124] [2023-11-12 00:45:33,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918358124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:45:33,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777183153] [2023-11-12 00:45:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:33,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:33,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:33,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:33,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:45:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:34,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-12 00:45:34,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:45:34,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:45:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777183153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:45:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2023-11-12 00:45:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134245795] [2023-11-12 00:45:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:45:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:45:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:45:34,536 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-12 00:45:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:35,121 INFO L93 Difference]: Finished difference Result 182 states and 211 transitions. [2023-11-12 00:45:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:45:35,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 98 [2023-11-12 00:45:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:35,125 INFO L225 Difference]: With dead ends: 182 [2023-11-12 00:45:35,125 INFO L226 Difference]: Without dead ends: 97 [2023-11-12 00:45:35,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:45:35,127 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:35,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 376 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:45:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-12 00:45:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-12 00:45:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 56 states have internal predecessors, (59), 26 states have call successors, (26), 14 states have call predecessors, (26), 17 states have return successors, (28), 26 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-12 00:45:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2023-11-12 00:45:35,143 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 98 [2023-11-12 00:45:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:35,144 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2023-11-12 00:45:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-12 00:45:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2023-11-12 00:45:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:45:35,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:35,146 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-12 00:45:35,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:35,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:35,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:35,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash -431574994, now seen corresponding path program 1 times [2023-11-12 00:45:35,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:35,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263887180] [2023-11-12 00:45:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:35,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:35,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:45:35,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735232993] [2023-11-12 00:45:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:35,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:35,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:35,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:35,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:45:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:36,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-12 00:45:36,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 00:45:36,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:45:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-12 00:45:36,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263887180] [2023-11-12 00:45:36,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:45:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735232993] [2023-11-12 00:45:36,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735232993] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:45:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:45:36,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2023-11-12 00:45:36,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585524660] [2023-11-12 00:45:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:45:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:45:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:45:36,586 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-12 00:45:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:37,017 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2023-11-12 00:45:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:45:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 103 [2023-11-12 00:45:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:37,021 INFO L225 Difference]: With dead ends: 137 [2023-11-12 00:45:37,021 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:45:37,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:45:37,023 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:37,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 462 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:45:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:45:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2023-11-12 00:45:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 51 states have internal predecessors, (54), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-12 00:45:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2023-11-12 00:45:37,044 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 103 [2023-11-12 00:45:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:37,047 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2023-11-12 00:45:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-12 00:45:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2023-11-12 00:45:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-12 00:45:37,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:37,052 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:45:37,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:37,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:37,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:37,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2122599849, now seen corresponding path program 1 times [2023-11-12 00:45:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865476509] [2023-11-12 00:45:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:37,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:45:37,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940129086] [2023-11-12 00:45:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:37,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:37,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b87113-54e0-4ffa-931c-0439751a9e32/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:45:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:38,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 207 conjunts are in the unsatisfiable core [2023-11-12 00:45:38,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:38,179 INFO L351 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 [2023-11-12 00:45:38,533 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-12 00:45:38,534 INFO L351 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 17 treesize of output 21 [2023-11-12 00:45:38,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:45:59,239 WARN L293 SmtUtils]: Spent 19.07s on a formula simplification. DAG size of input: 940 DAG size of output: 234 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-12 00:45:59,239 INFO L322 Elim1Store]: treesize reduction 3176, result has 13.7 percent of original size [2023-11-12 00:45:59,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 20 new quantified variables, introduced 174 case distinctions, treesize of input 573 treesize of output 1377