./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_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_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/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_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/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_6bb8c85a-d228-412a-abf1-5c01794a75f3/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 1d2e69f4642a563490a54ab98df347e9503153274554b670c58dee99087098c7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:00,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:00,987 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:58:00,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:00,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:01,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:01,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:01,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:01,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:01,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:01,031 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:01,032 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:01,032 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:01,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:01,033 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:01,034 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:01,037 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:01,038 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:01,038 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:01,039 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:01,039 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:01,043 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:01,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:01,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:01,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:01,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:01,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:01,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:01,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:01,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:01,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:01,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:01,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:01,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:01,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:01,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:01,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:01,050 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:01,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:01,051 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:01,051 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:01,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:01,052 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_6bb8c85a-d228-412a-abf1-5c01794a75f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2e69f4642a563490a54ab98df347e9503153274554b670c58dee99087098c7 [2023-11-12 00:58:01,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:01,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:01,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:01,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:01,356 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:01,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-12 00:58:04,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:05,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:05,037 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-12 00:58:05,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/data/ca44c7f47/a0023967292744c5b05548913613cdc5/FLAGcabc931a7 [2023-11-12 00:58:05,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/data/ca44c7f47/a0023967292744c5b05548913613cdc5 [2023-11-12 00:58:05,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:05,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:05,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:05,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:05,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:05,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:05" (1/1) ... [2023-11-12 00:58:05,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71feebb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:05, skipping insertion in model container [2023-11-12 00:58:05,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:05" (1/1) ... [2023-11-12 00:58:05,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:05,522 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_6bb8c85a-d228-412a-abf1-5c01794a75f3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-12 00:58:05,532 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_6bb8c85a-d228-412a-abf1-5c01794a75f3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-12 00:58:06,888 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,889 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,890 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,891 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,893 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,930 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,933 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,937 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:06,938 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:07,711 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:58:07,713 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:58:07,752 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:58:07,753 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:58:07,755 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:58:07,755 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:58:07,756 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:58:07,757 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:58:07,757 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:58:07,758 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:58:08,015 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,016 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:08,151 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:08,178 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_6bb8c85a-d228-412a-abf1-5c01794a75f3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-12 00:58:08,180 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_6bb8c85a-d228-412a-abf1-5c01794a75f3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-12 00:58:08,256 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,257 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,258 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,258 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,259 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,266 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,266 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,267 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,268 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,304 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:58:08,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:58:08,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:58:08,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:58:08,309 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:58:08,310 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:58:08,310 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:58:08,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:58:08,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:58:08,312 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:58:08,358 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,362 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:58:08,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-12 00:58:08,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:08,595 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,595 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,595 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,595 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,595 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,596 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,596 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,596 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,596 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,597 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:08,605 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:08,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08 WrapperNode [2023-11-12 00:58:08,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:08,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:08,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:08,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:08,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,834 INFO L138 Inliner]: procedures = 688, calls = 1515, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 734 [2023-11-12 00:58:08,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:08,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:08,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:08,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:08,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:08,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:08,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:08,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:08,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:08,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (1/1) ... [2023-11-12 00:58:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:09,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:09,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:09,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:58:09,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:58:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:58:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:58:09,084 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:58:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:58:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:58:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 00:58:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 00:58:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:58:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:58:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:58:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:58:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:58:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:58:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:58:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:58:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:58:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:58:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:58:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:58:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:58:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 00:58:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 00:58:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:58:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:58:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:58:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:58:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:58:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:58:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:58:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:58:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:58:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:58:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-12 00:58:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-12 00:58:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-12 00:58:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-12 00:58:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:09,410 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:09,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:10,502 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:10,812 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:10,812 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:58:10,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:10 BoogieIcfgContainer [2023-11-12 00:58:10,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:10,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:10,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:10,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:10,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:05" (1/3) ... [2023-11-12 00:58:10,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705288bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:10, skipping insertion in model container [2023-11-12 00:58:10,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:08" (2/3) ... [2023-11-12 00:58:10,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705288bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:10, skipping insertion in model container [2023-11-12 00:58:10,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:10" (3/3) ... [2023-11-12 00:58:10,827 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness_negated.i [2023-11-12 00:58:10,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:10,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:58:10,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:10,931 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;@44d692ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:10,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:58:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 states have internal predecessors, (107), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-12 00:58:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:58:10,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:10,950 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-12 00:58:10,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:10,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1045649622, now seen corresponding path program 1 times [2023-11-12 00:58:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788740968] [2023-11-12 00:58:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:11,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:58:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793976081] [2023-11-12 00:58:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:11,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:11,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:11,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:11,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:58:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:12,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:58:12,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 00:58:12,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:12,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:12,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788740968] [2023-11-12 00:58:12,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:58:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793976081] [2023-11-12 00:58:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793976081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:12,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:58:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027180953] [2023-11-12 00:58:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:12,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:58:12,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:12,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:58:12,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:12,130 INFO L87 Difference]: Start difference. First operand has 155 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 states have internal predecessors, (107), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:58:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:12,370 INFO L93 Difference]: Finished difference Result 295 states and 415 transitions. [2023-11-12 00:58:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:58:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 71 [2023-11-12 00:58:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:12,383 INFO L225 Difference]: With dead ends: 295 [2023-11-12 00:58:12,383 INFO L226 Difference]: Without dead ends: 151 [2023-11-12 00:58:12,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:12,402 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:12,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:58:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-12 00:58:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-12 00:58:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 84 states have internal predecessors, (99), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-12 00:58:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2023-11-12 00:58:12,493 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 71 [2023-11-12 00:58:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:12,495 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2023-11-12 00:58:12,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:58:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2023-11-12 00:58:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 00:58:12,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:12,502 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-11-12 00:58:12,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:12,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:58:12,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1566077689, now seen corresponding path program 1 times [2023-11-12 00:58:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468086257] [2023-11-12 00:58:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:12,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:58:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226270034] [2023-11-12 00:58:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:12,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:12,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:12,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:58:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:13,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:58:13,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-12 00:58:13,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:13,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:13,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468086257] [2023-11-12 00:58:13,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:58:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226270034] [2023-11-12 00:58:13,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226270034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:13,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:13,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:58:13,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664605146] [2023-11-12 00:58:13,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:13,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:58:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:58:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:58:13,697 INFO L87 Difference]: Start difference. First operand 151 states and 203 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:58:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:14,355 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2023-11-12 00:58:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:58:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 97 [2023-11-12 00:58:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:14,360 INFO L225 Difference]: With dead ends: 290 [2023-11-12 00:58:14,360 INFO L226 Difference]: Without dead ends: 151 [2023-11-12 00:58:14,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:58:14,363 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 8 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:14,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 868 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:58:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-12 00:58:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-12 00:58:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 84 states have internal predecessors, (98), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-12 00:58:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2023-11-12 00:58:14,392 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 97 [2023-11-12 00:58:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:14,393 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2023-11-12 00:58:14,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:58:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2023-11-12 00:58:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 00:58:14,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:14,397 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-11-12 00:58:14,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:14,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:14,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:14,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:14,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1571169131, now seen corresponding path program 1 times [2023-11-12 00:58:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:14,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895890507] [2023-11-12 00:58:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:14,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:14,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:58:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888826957] [2023-11-12 00:58:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:14,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:14,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:58:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:15,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:58:15,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-12 00:58:15,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:15,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895890507] [2023-11-12 00:58:15,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:58:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888826957] [2023-11-12 00:58:15,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888826957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:15,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:15,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:58:15,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958383822] [2023-11-12 00:58:15,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:15,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:15,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:15,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:15,584 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:58:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:15,796 INFO L93 Difference]: Finished difference Result 287 states and 383 transitions. [2023-11-12 00:58:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 99 [2023-11-12 00:58:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:15,800 INFO L225 Difference]: With dead ends: 287 [2023-11-12 00:58:15,800 INFO L226 Difference]: Without dead ends: 152 [2023-11-12 00:58:15,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:15,802 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:15,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:58:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-12 00:58:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-12 00:58:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 85 states have internal predecessors, (99), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-12 00:58:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2023-11-12 00:58:15,821 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 99 [2023-11-12 00:58:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:15,822 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2023-11-12 00:58:15,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:58:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2023-11-12 00:58:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 00:58:15,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:15,825 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-11-12 00:58:15,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:16,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash -930057793, now seen corresponding path program 1 times [2023-11-12 00:58:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766748679] [2023-11-12 00:58:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:16,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:58:16,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90494010] [2023-11-12 00:58:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:16,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:16,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:16,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:16,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb8c85a-d228-412a-abf1-5c01794a75f3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:58:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:16,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 2382 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:58:16,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-12 00:58:17,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-12 00:58:17,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766748679] [2023-11-12 00:58:17,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:58:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90494010] [2023-11-12 00:58:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90494010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1369035630] [2023-11-12 00:58:17,482 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2023-11-12 00:58:17,482 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:58:17,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:58:17,493 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:58:17,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs