./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh --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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:50:58,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:50:59,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:50:59,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:50:59,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:50:59,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:50:59,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:50:59,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:50:59,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:50:59,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:50:59,086 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:50:59,087 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:50:59,088 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:50:59,101 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:50:59,102 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:50:59,102 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:50:59,103 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:50:59,103 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:50:59,104 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:50:59,105 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:50:59,105 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:50:59,106 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:50:59,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:50:59,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:50:59,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:50:59,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:50:59,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:50:59,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:50:59,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:50:59,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:50:59,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:50:59,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:50:59,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:50:59,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:50:59,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:50:59,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:50:59,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:50:59,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:50:59,113 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:50:59,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:50:59,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:50:59,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:50:59,114 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:50:59,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:50:59,114 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_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2023-12-02 18:50:59,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:50:59,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:50:59,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:50:59,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:50:59,393 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:50:59,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-12-02 18:51:02,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:51:02,699 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:51:02,700 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-12-02 18:51:02,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/data/ecfc8f738/c7a63653fda147e1a67a287ed5c2af82/FLAGe9bdb7f76 [2023-12-02 18:51:02,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/data/ecfc8f738/c7a63653fda147e1a67a287ed5c2af82 [2023-12-02 18:51:02,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:51:02,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:51:02,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:02,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:51:02,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:51:02,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:02" (1/1) ... [2023-12-02 18:51:02,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f22a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:02, skipping insertion in model container [2023-12-02 18:51:02,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:02" (1/1) ... [2023-12-02 18:51:02,924 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:51:03,193 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_7b532972-bd12-4eb9-8e13-1795081ce662/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-12-02 18:51:03,202 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_7b532972-bd12-4eb9-8e13-1795081ce662/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-12-02 18:51:04,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,165 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,165 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,598 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:51:04,599 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:51:04,600 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:51:04,602 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:51:04,603 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:51:04,604 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:51:04,605 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:51:04,605 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:51:04,606 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:51:04,606 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:51:04,807 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,807 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:04,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:04,911 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:51:04,925 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_7b532972-bd12-4eb9-8e13-1795081ce662/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-12-02 18:51:04,925 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_7b532972-bd12-4eb9-8e13-1795081ce662/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-12-02 18:51:05,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,121 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:51:05,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:51:05,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:51:05,123 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:51:05,124 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:51:05,124 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:51:05,125 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:51:05,125 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:51:05,126 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:51:05,126 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:51:05,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:05,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-12-02 18:51:05,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:05,377 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,377 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,378 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,378 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,378 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,378 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,379 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,379 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,379 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,379 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,379 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,380 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,380 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,380 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,380 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:05,387 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:51:05,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05 WrapperNode [2023-12-02 18:51:05,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:05,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:05,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:51:05,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:51:05,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,537 INFO L138 Inliner]: procedures = 688, calls = 1518, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 740 [2023-12-02 18:51:05,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:05,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:51:05,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:51:05,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:51:05,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:51:05,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:51:05,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:51:05,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:51:05,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (1/1) ... [2023-12-02 18:51:05,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:51:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:05,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:51:05,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:51:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-12-02 18:51:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-12-02 18:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 18:51:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 18:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 18:51:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 18:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-12-02 18:51:05,724 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-12-02 18:51:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:51:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 18:51:05,724 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 18:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:51:05,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:51:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 18:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 18:51:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-12-02 18:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-12-02 18:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 18:51:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 18:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 18:51:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 18:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-12-02 18:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-12-02 18:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 18:51:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 18:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 18:51:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 18:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-12-02 18:51:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-12-02 18:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-12-02 18:51:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-12-02 18:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:51:06,019 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:51:06,022 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:51:06,767 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:51:06,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:51:06,992 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 18:51:06,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:06 BoogieIcfgContainer [2023-12-02 18:51:06,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:51:06,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:51:06,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:51:07,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:51:07,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:02" (1/3) ... [2023-12-02 18:51:07,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfdda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:07, skipping insertion in model container [2023-12-02 18:51:07,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:05" (2/3) ... [2023-12-02 18:51:07,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfdda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:07, skipping insertion in model container [2023-12-02 18:51:07,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:06" (3/3) ... [2023-12-02 18:51:07,003 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2023-12-02 18:51:07,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:51:07,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:51:07,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:51:07,097 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;@705e7ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:51:07,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:51:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 90 states have internal predecessors, (110), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 18:51:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:51:07,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:07,116 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 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] [2023-12-02 18:51:07,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:07,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -198617788, now seen corresponding path program 1 times [2023-12-02 18:51:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825692997] [2023-12-02 18:51:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:07,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133396951] [2023-12-02 18:51:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:07,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:07,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:07,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:07,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:51:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:08,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:51:08,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 18:51:08,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:08,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825692997] [2023-12-02 18:51:08,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133396951] [2023-12-02 18:51:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133396951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:51:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7672277] [2023-12-02 18:51:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:08,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:51:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:51:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:51:08,142 INFO L87 Difference]: Start difference. First operand has 162 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 90 states have internal predecessors, (110), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:51:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:08,395 INFO L93 Difference]: Finished difference Result 305 states and 427 transitions. [2023-12-02 18:51:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:51:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 82 [2023-12-02 18:51:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:08,411 INFO L225 Difference]: With dead ends: 305 [2023-12-02 18:51:08,411 INFO L226 Difference]: Without dead ends: 158 [2023-12-02 18:51:08,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:51:08,420 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:08,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:51:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-02 18:51:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-02 18:51:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 18:51:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 212 transitions. [2023-12-02 18:51:08,487 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 212 transitions. Word has length 82 [2023-12-02 18:51:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:08,489 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 212 transitions. [2023-12-02 18:51:08,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:51:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 212 transitions. [2023-12-02 18:51:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 18:51:08,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:08,495 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:08,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:51:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 18:51:08,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:08,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1292296639, now seen corresponding path program 1 times [2023-12-02 18:51:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507889680] [2023-12-02 18:51:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:08,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129765639] [2023-12-02 18:51:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:08,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:08,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:08,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:51:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:09,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:51:09,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 18:51:09,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:09,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507889680] [2023-12-02 18:51:09,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129765639] [2023-12-02 18:51:09,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129765639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:09,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:09,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:51:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139027259] [2023-12-02 18:51:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:09,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:51:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:51:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:51:09,518 INFO L87 Difference]: Start difference. First operand 158 states and 212 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-02 18:51:10,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:10,100 INFO L93 Difference]: Finished difference Result 300 states and 397 transitions. [2023-12-02 18:51:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:51:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 108 [2023-12-02 18:51:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:10,105 INFO L225 Difference]: With dead ends: 300 [2023-12-02 18:51:10,105 INFO L226 Difference]: Without dead ends: 158 [2023-12-02 18:51:10,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:51:10,109 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 8 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:10,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 908 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:51:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-02 18:51:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-02 18:51:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 85 states have (on average 1.188235294117647) internal successors, (101), 87 states have internal predecessors, (101), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 18:51:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2023-12-02 18:51:10,135 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 108 [2023-12-02 18:51:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:10,135 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2023-12-02 18:51:10,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-02 18:51:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2023-12-02 18:51:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 18:51:10,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:10,139 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:10,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:51:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 18:51:10,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:10,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1278027779, now seen corresponding path program 1 times [2023-12-02 18:51:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:10,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502036374] [2023-12-02 18:51:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:10,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478034875] [2023-12-02 18:51:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:10,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:10,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:10,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:10,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:51:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:10,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:51:10,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 18:51:11,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:11,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:11,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502036374] [2023-12-02 18:51:11,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478034875] [2023-12-02 18:51:11,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478034875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:11,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:11,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:51:11,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622488688] [2023-12-02 18:51:11,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:11,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:51:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:11,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:51:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:11,042 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 18:51:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:11,449 INFO L93 Difference]: Finished difference Result 297 states and 395 transitions. [2023-12-02 18:51:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:51:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 110 [2023-12-02 18:51:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:11,453 INFO L225 Difference]: With dead ends: 297 [2023-12-02 18:51:11,453 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 18:51:11,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:11,456 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:11,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 374 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:51:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 18:51:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 18:51:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 18:51:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2023-12-02 18:51:11,477 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 110 [2023-12-02 18:51:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:11,477 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2023-12-02 18:51:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 18:51:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2023-12-02 18:51:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 18:51:11,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:11,479 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:11,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:51:11,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:11,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1462651319, now seen corresponding path program 1 times [2023-12-02 18:51:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917187053] [2023-12-02 18:51:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:11,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:11,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:11,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974167962] [2023-12-02 18:51:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:11,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:11,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:11,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b532972-bd12-4eb9-8e13-1795081ce662/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:51:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:12,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:51:12,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 18:51:12,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:51:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-02 18:51:12,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917187053] [2023-12-02 18:51:12,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974167962] [2023-12-02 18:51:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974167962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:51:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [887842843] [2023-12-02 18:51:12,847 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 18:51:12,847 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:51:12,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:51:12,856 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:51:12,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:57:58,607 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 2133 for LOIs [2023-12-02 18:58:07,405 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 190 for LOIs [2023-12-02 18:58:07,551 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 85 for LOIs [2023-12-02 18:58:08,004 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 91 for LOIs [2023-12-02 18:58:08,057 INFO L197 IcfgInterpreter]: Interpreting procedure my_memset with input of size 51 for LOIs [2023-12-02 18:58:08,181 INFO L197 IcfgInterpreter]: Interpreting procedure memset_impl with input of size 63 for LOIs [2023-12-02 18:58:08,382 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 104 for LOIs [2023-12-02 18:58:08,560 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 36 for LOIs [2023-12-02 18:58:08,564 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_size_t with input of size 36 for LOIs [2023-12-02 18:58:08,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:00:09,941 WARN L293 SmtUtils]: Spent 1.98m on a formula simplification. DAG size of input: 2137 DAG size of output: 2135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:02:23,210 WARN L293 SmtUtils]: Spent 2.19m on a formula simplification. DAG size of input: 2133 DAG size of output: 2131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:04:33,918 WARN L293 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 2137 DAG size of output: 2135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:05:17,444 WARN L293 SmtUtils]: Spent 41.20s on a formula simplification. DAG size of input: 2140 DAG size of output: 2139 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)