./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91 --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 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:18,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:18,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:05:18,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:18,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:18,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:18,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:18,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:18,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:18,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:18,898 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:18,899 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:18,900 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:18,902 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:18,902 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:18,903 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:18,903 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:18,903 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:18,904 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:18,905 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:18,905 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:18,906 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:18,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:18,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:18,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:18,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:18,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:18,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:18,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:18,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:18,911 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:18,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:18,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:18,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:18,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:18,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:18,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:18,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:18,913 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:18,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:18,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:18,914 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:18,915 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:18,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:18,915 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_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce [2023-11-25 00:05:19,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:19,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:19,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:19,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:19,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:19,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-25 00:05:22,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:23,424 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:23,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-25 00:05:23,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/data/debb27027/36144919e32147689c660e0f15cafda7/FLAG1b5d55a85 [2023-11-25 00:05:23,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/data/debb27027/36144919e32147689c660e0f15cafda7 [2023-11-25 00:05:23,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:23,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:23,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:23,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:23,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:23,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:23" (1/1) ... [2023-11-25 00:05:23,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3737df33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:23, skipping insertion in model container [2023-11-25 00:05:23,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:23" (1/1) ... [2023-11-25 00:05:23,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:23,915 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_1daccaef-e976-4147-a4c5-4dd451621743/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-25 00:05:23,925 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_1daccaef-e976-4147-a4c5-4dd451621743/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-25 00:05:25,207 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,210 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,212 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,243 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:25,766 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:25,768 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:25,770 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:25,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:25,774 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:25,776 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:25,777 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:25,778 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:25,779 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:25,780 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:26,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:26,235 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:26,286 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_1daccaef-e976-4147-a4c5-4dd451621743/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-25 00:05:26,287 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_1daccaef-e976-4147-a4c5-4dd451621743/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-25 00:05:26,402 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,404 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,420 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,420 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,473 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:26,474 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:26,475 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:26,477 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:26,478 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:26,479 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:26,480 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:26,481 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:26,481 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:26,482 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:26,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,536 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:26,554 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-25 00:05:26,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:26,942 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,943 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,943 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,943 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,944 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,944 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,944 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,945 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,945 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,946 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,947 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,947 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,947 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,947 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,950 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:26,959 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:26,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26 WrapperNode [2023-11-25 00:05:26,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:26,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:26,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:26,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:26,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,183 INFO L138 Inliner]: procedures = 688, calls = 1531, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 682 [2023-11-25 00:05:27,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:27,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:27,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:27,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:27,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:27,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:27,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:27,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:27,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:27,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:27,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:27,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-25 00:05:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-25 00:05:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:05:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:05:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:05:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:05:27,420 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:05:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:05:27,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:05:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:05:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:05:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:05:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:05:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-25 00:05:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-25 00:05:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:05:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:05:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-25 00:05:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-25 00:05:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:05:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:05:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:05:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:05:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:05:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:05:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:05:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:05:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:05:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-25 00:05:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-25 00:05:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-25 00:05:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-25 00:05:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:27,804 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:27,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:28,922 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:29,239 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:29,239 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-25 00:05:29,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:29 BoogieIcfgContainer [2023-11-25 00:05:29,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:29,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:29,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:29,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:29,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:23" (1/3) ... [2023-11-25 00:05:29,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a47116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:29, skipping insertion in model container [2023-11-25 00:05:29,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26" (2/3) ... [2023-11-25 00:05:29,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a47116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:29, skipping insertion in model container [2023-11-25 00:05:29,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:29" (3/3) ... [2023-11-25 00:05:29,257 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness_negated.i [2023-11-25 00:05:29,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:29,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:05:29,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:29,375 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;@5d26dbd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:29,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:05:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-25 00:05:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-25 00:05:29,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:29,410 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:29,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:29,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1454262698, now seen corresponding path program 1 times [2023-11-25 00:05:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:29,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366620387] [2023-11-25 00:05:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:29,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:29,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700135355] [2023-11-25 00:05:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:29,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:29,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:29,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:29,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:05:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:30,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:05:30,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-25 00:05:30,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:30,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:30,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366620387] [2023-11-25 00:05:30,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:30,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700135355] [2023-11-25 00:05:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700135355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:30,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361005540] [2023-11-25 00:05:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:30,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:05:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:05:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:30,780 INFO L87 Difference]: Start difference. First operand has 134 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-25 00:05:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:31,073 INFO L93 Difference]: Finished difference Result 230 states and 316 transitions. [2023-11-25 00:05:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:05:31,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 114 [2023-11-25 00:05:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:31,089 INFO L225 Difference]: With dead ends: 230 [2023-11-25 00:05:31,089 INFO L226 Difference]: Without dead ends: 131 [2023-11-25 00:05:31,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:31,104 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:05:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-25 00:05:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-25 00:05:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-25 00:05:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-11-25 00:05:31,193 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 114 [2023-11-25 00:05:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:31,196 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-11-25 00:05:31,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-25 00:05:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-11-25 00:05:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-25 00:05:31,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:31,204 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:31,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:31,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:05:31,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:31,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash -772303204, now seen corresponding path program 1 times [2023-11-25 00:05:31,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:31,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814678889] [2023-11-25 00:05:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:31,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689636184] [2023-11-25 00:05:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:31,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:31,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:31,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:05:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:32,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:05:32,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-25 00:05:32,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:32,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814678889] [2023-11-25 00:05:32,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689636184] [2023-11-25 00:05:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689636184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:32,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:05:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150137819] [2023-11-25 00:05:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:32,392 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-25 00:05:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:33,159 INFO L93 Difference]: Finished difference Result 202 states and 263 transitions. [2023-11-25 00:05:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:05:33,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 127 [2023-11-25 00:05:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:33,165 INFO L225 Difference]: With dead ends: 202 [2023-11-25 00:05:33,165 INFO L226 Difference]: Without dead ends: 133 [2023-11-25 00:05:33,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:05:33,168 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 28 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:33,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 726 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:05:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-25 00:05:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-25 00:05:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 72 states have internal predecessors, (80), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-25 00:05:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 177 transitions. [2023-11-25 00:05:33,190 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 177 transitions. Word has length 127 [2023-11-25 00:05:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:33,191 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 177 transitions. [2023-11-25 00:05:33,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-25 00:05:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 177 transitions. [2023-11-25 00:05:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-25 00:05:33,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:33,195 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:33,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:33,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:33,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1667917333, now seen corresponding path program 1 times [2023-11-25 00:05:33,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:33,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754868762] [2023-11-25 00:05:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:33,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:33,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019929800] [2023-11-25 00:05:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:33,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:05:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:34,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:05:34,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-25 00:05:34,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:34,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754868762] [2023-11-25 00:05:34,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:34,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019929800] [2023-11-25 00:05:34,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019929800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:34,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:34,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:05:34,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920617412] [2023-11-25 00:05:34,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:34,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:05:34,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:05:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:05:34,394 INFO L87 Difference]: Start difference. First operand 133 states and 177 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-25 00:05:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:35,060 INFO L93 Difference]: Finished difference Result 221 states and 289 transitions. [2023-11-25 00:05:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:05:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 136 [2023-11-25 00:05:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:35,065 INFO L225 Difference]: With dead ends: 221 [2023-11-25 00:05:35,065 INFO L226 Difference]: Without dead ends: 133 [2023-11-25 00:05:35,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:35,068 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 8 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:35,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 750 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:05:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-25 00:05:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-25 00:05:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 72 states have internal predecessors, (79), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-25 00:05:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2023-11-25 00:05:35,088 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 136 [2023-11-25 00:05:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:35,089 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2023-11-25 00:05:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-25 00:05:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2023-11-25 00:05:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-25 00:05:35,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:35,093 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:35,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:35,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 834330955, now seen corresponding path program 1 times [2023-11-25 00:05:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454583607] [2023-11-25 00:05:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:35,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179649287] [2023-11-25 00:05:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:35,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:35,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:35,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:05:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:36,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:36,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-25 00:05:36,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:36,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454583607] [2023-11-25 00:05:36,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179649287] [2023-11-25 00:05:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179649287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:36,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:05:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985027016] [2023-11-25 00:05:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:36,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:36,196 INFO L87 Difference]: Start difference. First operand 133 states and 176 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-25 00:05:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:36,647 INFO L93 Difference]: Finished difference Result 222 states and 290 transitions. [2023-11-25 00:05:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:36,651 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 137 [2023-11-25 00:05:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:36,653 INFO L225 Difference]: With dead ends: 222 [2023-11-25 00:05:36,654 INFO L226 Difference]: Without dead ends: 134 [2023-11-25 00:05:36,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:36,656 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:36,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 308 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:05:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-25 00:05:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-11-25 00:05:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 73 states have internal predecessors, (80), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-25 00:05:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2023-11-25 00:05:36,676 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 137 [2023-11-25 00:05:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:36,677 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2023-11-25 00:05:36,678 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-25 00:05:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2023-11-25 00:05:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-25 00:05:36,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:36,681 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:36,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:36,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:36,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1162576298, now seen corresponding path program 1 times [2023-11-25 00:05:36,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:36,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373565592] [2023-11-25 00:05:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:37,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898230604] [2023-11-25 00:05:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:37,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:37,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:37,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daccaef-e976-4147-a4c5-4dd451621743/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:05:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:37,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-25 00:05:37,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-25 00:05:38,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-25 00:05:38,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373565592] [2023-11-25 00:05:38,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:38,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898230604] [2023-11-25 00:05:38,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898230604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:38,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127096779] [2023-11-25 00:05:38,392 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-11-25 00:05:38,392 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:38,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:38,401 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:38,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs