./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.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_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/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_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/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_52441498-5458-4337-bbc6-d972cbc26bbf/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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:38:48,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:38:48,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:38:48,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:38:48,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:38:48,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:38:48,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:38:48,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:38:48,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:38:48,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:38:48,541 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:38:48,542 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:38:48,542 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:38:48,543 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:38:48,543 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:38:48,544 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:38:48,544 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:38:48,545 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:38:48,545 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:38:48,546 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:38:48,546 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:38:48,547 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:38:48,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:38:48,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:38:48,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:38:48,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:38:48,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:38:48,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:38:48,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:38:48,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:38:48,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:38:48,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:38:48,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:38:48,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:38:48,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:38:48,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:38:48,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:38:48,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:38:48,553 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:38:48,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:38:48,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:38:48,554 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:38:48,554 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:38:48,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:38:48,555 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_52441498-5458-4337-bbc6-d972cbc26bbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2023-12-02 16:38:48,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:38:48,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:38:48,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:38:48,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:38:48,810 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:38:48,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-12-02 16:38:51,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:38:51,937 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:38:51,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-12-02 16:38:51,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/data/c88c88536/d5211baa0b7c4cc288f73fcfaf77cf72/FLAGd28b47b0a [2023-12-02 16:38:51,987 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/data/c88c88536/d5211baa0b7c4cc288f73fcfaf77cf72 [2023-12-02 16:38:51,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:38:51,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:38:51,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:38:51,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:38:51,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:38:51,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:38:51" (1/1) ... [2023-12-02 16:38:51,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269cdacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:51, skipping insertion in model container [2023-12-02 16:38:52,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:38:51" (1/1) ... [2023-12-02 16:38:52,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:38:52,373 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_52441498-5458-4337-bbc6-d972cbc26bbf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-12-02 16:38:52,382 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_52441498-5458-4337-bbc6-d972cbc26bbf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-12-02 16:38:53,244 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,264 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,269 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,271 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,271 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,655 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 16:38:53,656 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 16:38:53,658 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 16:38:53,659 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 16:38:53,661 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 16:38:53,662 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 16:38:53,662 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 16:38:53,663 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 16:38:53,664 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 16:38:53,665 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 16:38:53,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,868 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,947 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,947 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,951 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:53,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:38:54,006 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:38:54,018 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_52441498-5458-4337-bbc6-d972cbc26bbf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-12-02 16:38:54,019 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_52441498-5458-4337-bbc6-d972cbc26bbf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-12-02 16:38:54,059 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,071 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,071 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,107 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 16:38:54,108 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 16:38:54,109 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 16:38:54,109 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 16:38:54,110 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 16:38:54,111 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 16:38:54,111 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 16:38:54,112 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 16:38:54,112 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 16:38:54,113 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 16:38:54,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-12-02 16:38:54,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,184 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:38:54,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:38:54,388 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,389 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,390 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,390 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,390 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,390 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,390 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:38:54,397 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:38:54,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54 WrapperNode [2023-12-02 16:38:54,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:38:54,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:38:54,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:38:54,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:38:54,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,528 INFO L138 Inliner]: procedures = 696, calls = 1888, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 820 [2023-12-02 16:38:54,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:38:54,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:38:54,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:38:54,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:38:54,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:38:54,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:38:54,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:38:54,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:38:54,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (1/1) ... [2023-12-02 16:38:54,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:38:54,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:38:54,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:38:54,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:38:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-12-02 16:38:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-12-02 16:38:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-12-02 16:38:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-12-02 16:38:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:38:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-12-02 16:38:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-12-02 16:38:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 16:38:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 16:38:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 16:38:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-12-02 16:38:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 16:38:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:38:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:38:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:38:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:38:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-12-02 16:38:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-12-02 16:38:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-12-02 16:38:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-12-02 16:38:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:38:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:38:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 16:38:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 16:38:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 16:38:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 16:38:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 16:38:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 16:38:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-12-02 16:38:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-12-02 16:38:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-12-02 16:38:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-12-02 16:38:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:38:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:38:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-12-02 16:38:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-12-02 16:38:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-12-02 16:38:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 16:38:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 16:38:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:38:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-12-02 16:38:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-12-02 16:38:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 16:38:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 16:38:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 16:38:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 16:38:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:38:54,952 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:38:54,955 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:38:55,892 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:38:56,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:38:56,140 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-02 16:38:56,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:38:56 BoogieIcfgContainer [2023-12-02 16:38:56,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:38:56,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:38:56,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:38:56,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:38:56,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:38:51" (1/3) ... [2023-12-02 16:38:56,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b658f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:38:56, skipping insertion in model container [2023-12-02 16:38:56,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:54" (2/3) ... [2023-12-02 16:38:56,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b658f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:38:56, skipping insertion in model container [2023-12-02 16:38:56,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:38:56" (3/3) ... [2023-12-02 16:38:56,150 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2023-12-02 16:38:56,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:38:56,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:38:56,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:38:56,229 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;@247862b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:38:56,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:38:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 132 states have (on average 1.2196969696969697) internal successors, (161), 135 states have internal predecessors, (161), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-02 16:38:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 16:38:56,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:56,248 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 3, 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] [2023-12-02 16:38:56,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:56,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1719865765, now seen corresponding path program 1 times [2023-12-02 16:38:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96520000] [2023-12-02 16:38:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 16:38:57,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96520000] [2023-12-02 16:38:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96520000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:38:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653232170] [2023-12-02 16:38:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:57,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:38:57,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:38:57,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:38:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:38:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:57,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:38:57,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 16:38:57,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653232170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:38:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-02 16:38:57,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50415958] [2023-12-02 16:38:57,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:38:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:38:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:57,891 INFO L87 Difference]: Start difference. First operand has 253 states, 132 states have (on average 1.2196969696969697) internal successors, (161), 135 states have internal predecessors, (161), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 16:38:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:58,413 INFO L93 Difference]: Finished difference Result 477 states and 692 transitions. [2023-12-02 16:38:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:38:58,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 79 [2023-12-02 16:38:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:58,428 INFO L225 Difference]: With dead ends: 477 [2023-12-02 16:38:58,428 INFO L226 Difference]: Without dead ends: 252 [2023-12-02 16:38:58,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:38:58,439 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 33 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:58,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1134 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:38:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-02 16:38:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-02 16:38:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 135 states have internal predecessors, (157), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2023-12-02 16:38:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 349 transitions. [2023-12-02 16:38:58,512 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 349 transitions. Word has length 79 [2023-12-02 16:38:58,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:58,513 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 349 transitions. [2023-12-02 16:38:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 16:38:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 349 transitions. [2023-12-02 16:38:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 16:38:58,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:58,518 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:58,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:38:58,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:38:58,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:58,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash 815268457, now seen corresponding path program 1 times [2023-12-02 16:38:58,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:58,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132710280] [2023-12-02 16:38:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 16:38:59,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:59,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132710280] [2023-12-02 16:38:59,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132710280] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:38:59,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70261720] [2023-12-02 16:38:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:59,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:38:59,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:38:59,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:38:59,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:38:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:59,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:38:59,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 16:39:00,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70261720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:39:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 16:39:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844669332] [2023-12-02 16:39:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:39:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:39:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:39:00,017 INFO L87 Difference]: Start difference. First operand 252 states and 349 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-02 16:39:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:00,778 INFO L93 Difference]: Finished difference Result 487 states and 690 transitions. [2023-12-02 16:39:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:39:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2023-12-02 16:39:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:00,783 INFO L225 Difference]: With dead ends: 487 [2023-12-02 16:39:00,783 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 16:39:00,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:39:00,786 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 52 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:00,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1630 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:39:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 16:39:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2023-12-02 16:39:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-12-02 16:39:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-12-02 16:39:00,821 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 87 [2023-12-02 16:39:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:00,821 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-12-02 16:39:00,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-02 16:39:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-12-02 16:39:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:39:00,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:00,825 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 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] [2023-12-02 16:39:00,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:39:01,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 16:39:01,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1972882077, now seen corresponding path program 1 times [2023-12-02 16:39:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:01,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225095714] [2023-12-02 16:39:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:01,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:01,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411138800] [2023-12-02 16:39:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:01,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:01,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:01,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:39:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:01,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:39:01,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 16:39:01,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:01,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225095714] [2023-12-02 16:39:01,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411138800] [2023-12-02 16:39:01,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411138800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:39:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777080722] [2023-12-02 16:39:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:39:01,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:39:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:39:01,790 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-02 16:39:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:02,294 INFO L93 Difference]: Finished difference Result 502 states and 722 transitions. [2023-12-02 16:39:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:39:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 96 [2023-12-02 16:39:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:02,298 INFO L225 Difference]: With dead ends: 502 [2023-12-02 16:39:02,299 INFO L226 Difference]: Without dead ends: 269 [2023-12-02 16:39:02,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:39:02,302 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 40 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:02,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1404 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:39:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-02 16:39:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-02 16:39:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-12-02 16:39:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-12-02 16:39:02,330 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 96 [2023-12-02 16:39:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:02,331 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-12-02 16:39:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-02 16:39:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-12-02 16:39:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-02 16:39:02,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:02,334 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 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 16:39:02,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:39:02,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-02 16:39:02,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1386578554, now seen corresponding path program 1 times [2023-12-02 16:39:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355072761] [2023-12-02 16:39:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:02,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666045375] [2023-12-02 16:39:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:02,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:02,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:02,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:39:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:03,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:39:03,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 16:39:03,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:03,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355072761] [2023-12-02 16:39:03,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666045375] [2023-12-02 16:39:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666045375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:03,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:03,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 16:39:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099488374] [2023-12-02 16:39:03,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:03,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:03,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:03,238 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-02 16:39:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:04,074 INFO L93 Difference]: Finished difference Result 504 states and 723 transitions. [2023-12-02 16:39:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:39:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 104 [2023-12-02 16:39:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:04,078 INFO L225 Difference]: With dead ends: 504 [2023-12-02 16:39:04,078 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 16:39:04,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:39:04,080 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 63 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:04,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1889 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:39:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 16:39:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2023-12-02 16:39:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-12-02 16:39:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-12-02 16:39:04,103 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 104 [2023-12-02 16:39:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:04,104 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-12-02 16:39:04,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-02 16:39:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-12-02 16:39:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 16:39:04,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:04,106 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:04,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:39:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:04,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:04,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1201572634, now seen corresponding path program 1 times [2023-12-02 16:39:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543351409] [2023-12-02 16:39:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:04,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221494604] [2023-12-02 16:39:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:04,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:04,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:04,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:04,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:39:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:04,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:39:04,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-02 16:39:04,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:04,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543351409] [2023-12-02 16:39:04,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221494604] [2023-12-02 16:39:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221494604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:04,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:04,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:39:04,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938897944] [2023-12-02 16:39:04,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:04,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:39:04,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:39:04,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:39:04,992 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:39:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:05,549 INFO L93 Difference]: Finished difference Result 472 states and 679 transitions. [2023-12-02 16:39:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:39:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 113 [2023-12-02 16:39:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:05,553 INFO L225 Difference]: With dead ends: 472 [2023-12-02 16:39:05,553 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 16:39:05,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:39:05,555 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 63 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:05,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1661 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:39:05,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 16:39:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-02 16:39:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 145 states have internal predecessors, (168), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2023-12-02 16:39:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 377 transitions. [2023-12-02 16:39:05,576 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 377 transitions. Word has length 113 [2023-12-02 16:39:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:05,577 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 377 transitions. [2023-12-02 16:39:05,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:39:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 377 transitions. [2023-12-02 16:39:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 16:39:05,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:05,580 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:05,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:39:05,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:05,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:05,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1544574646, now seen corresponding path program 1 times [2023-12-02 16:39:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456102614] [2023-12-02 16:39:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:05,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:05,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376619217] [2023-12-02 16:39:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:05,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:05,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:05,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:05,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:39:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:06,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:39:06,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 16:39:06,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:06,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456102614] [2023-12-02 16:39:06,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376619217] [2023-12-02 16:39:06,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376619217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:06,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:39:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642772980] [2023-12-02 16:39:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:39:06,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:39:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:39:06,498 INFO L87 Difference]: Start difference. First operand 265 states and 377 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-02 16:39:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:07,336 INFO L93 Difference]: Finished difference Result 482 states and 693 transitions. [2023-12-02 16:39:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:39:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 129 [2023-12-02 16:39:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:07,339 INFO L225 Difference]: With dead ends: 482 [2023-12-02 16:39:07,340 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 16:39:07,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:39:07,342 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 77 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:07,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2166 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:39:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 16:39:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2023-12-02 16:39:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 149 states have internal predecessors, (174), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-12-02 16:39:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 385 transitions. [2023-12-02 16:39:07,359 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 385 transitions. Word has length 129 [2023-12-02 16:39:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:07,360 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 385 transitions. [2023-12-02 16:39:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-02 16:39:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 385 transitions. [2023-12-02 16:39:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 16:39:07,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:07,363 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 16:39:07,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 16:39:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:39:07,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:07,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1431765648, now seen corresponding path program 1 times [2023-12-02 16:39:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530551634] [2023-12-02 16:39:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:07,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647673903] [2023-12-02 16:39:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:07,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:07,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:07,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:07,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:39:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:08,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:39:08,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 16:39:08,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:08,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530551634] [2023-12-02 16:39:08,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647673903] [2023-12-02 16:39:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647673903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:08,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:08,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 16:39:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94869151] [2023-12-02 16:39:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:08,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:08,399 INFO L87 Difference]: Start difference. First operand 271 states and 385 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-02 16:39:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:08,987 INFO L93 Difference]: Finished difference Result 492 states and 706 transitions. [2023-12-02 16:39:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:39:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2023-12-02 16:39:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:08,991 INFO L225 Difference]: With dead ends: 492 [2023-12-02 16:39:08,991 INFO L226 Difference]: Without dead ends: 277 [2023-12-02 16:39:08,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:39:08,994 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 70 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:08,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1926 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:39:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-02 16:39:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2023-12-02 16:39:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 149 states have internal predecessors, (174), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-12-02 16:39:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 385 transitions. [2023-12-02 16:39:09,012 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 385 transitions. Word has length 147 [2023-12-02 16:39:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 385 transitions. [2023-12-02 16:39:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-02 16:39:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 385 transitions. [2023-12-02 16:39:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-02 16:39:09,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:09,015 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 16:39:09,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:39:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 16:39:09,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:09,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1712251120, now seen corresponding path program 1 times [2023-12-02 16:39:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95326950] [2023-12-02 16:39:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:09,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:09,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261379663] [2023-12-02 16:39:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:09,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:09,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:09,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:09,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:39:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:09,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:39:09,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-02 16:39:10,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:39:10,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95326950] [2023-12-02 16:39:10,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261379663] [2023-12-02 16:39:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261379663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:10,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:39:10,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381248125] [2023-12-02 16:39:10,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:10,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:39:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:10,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:39:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:39:10,089 INFO L87 Difference]: Start difference. First operand 271 states and 385 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-02 16:39:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:11,067 INFO L93 Difference]: Finished difference Result 486 states and 696 transitions. [2023-12-02 16:39:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:39:11,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 163 [2023-12-02 16:39:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:11,070 INFO L225 Difference]: With dead ends: 486 [2023-12-02 16:39:11,070 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 16:39:11,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:39:11,072 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 93 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:11,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 2379 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:39:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 16:39:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2023-12-02 16:39:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-02 16:39:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 372 transitions. [2023-12-02 16:39:11,088 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 372 transitions. Word has length 163 [2023-12-02 16:39:11,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:11,088 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 372 transitions. [2023-12-02 16:39:11,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-02 16:39:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 372 transitions. [2023-12-02 16:39:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 16:39:11,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:11,092 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 16:39:11,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 16:39:11,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:11,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:11,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash 447166808, now seen corresponding path program 1 times [2023-12-02 16:39:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859546536] [2023-12-02 16:39:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:11,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:39:11,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776010656] [2023-12-02 16:39:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:11,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:11,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52441498-5458-4337-bbc6-d972cbc26bbf/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:39:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:12,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-02 16:39:12,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:12,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:39:12,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 16:39:12,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:39:12,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:39:12,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:39:15,285 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_int| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)))) is different from true [2023-12-02 16:39:15,849 INFO L349 Elim1Store]: treesize reduction 58, result has 31.0 percent of original size [2023-12-02 16:39:15,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 88 [2023-12-02 16:39:15,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:39:15,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2023-12-02 16:39:16,357 INFO L349 Elim1Store]: treesize reduction 40, result has 18.4 percent of original size [2023-12-02 16:39:16,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 22 [2023-12-02 16:39:26,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:39:36,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-02 16:39:36,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-02 16:39:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 154 proven. 28 refuted. 0 times theorem prover too weak. 98 trivial. 5 not checked. [2023-12-02 16:39:36,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:39:38,726 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-02 16:39:38,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 62 [2023-12-02 16:39:38,755 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-02 16:39:38,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2023-12-02 16:39:43,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859546536] [2023-12-02 16:39:43,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:39:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776010656] [2023-12-02 16:39:43,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776010656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:39:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481320455] [2023-12-02 16:39:43,811 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 16:39:43,811 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:39:43,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:39:43,818 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:39:43,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:43:38,962 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 2279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 16:43:44,030 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 2279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 16:44:49,514 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2233 for LOIs [2023-12-02 16:45:46,617 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 217 for LOIs [2023-12-02 16:45:48,969 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 38 for LOIs [2023-12-02 16:45:48,975 INFO L197 IcfgInterpreter]: Interpreting procedure s_sift_up with input of size 68 for LOIs [2023-12-02 16:45:50,375 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-12-02 16:45:50,387 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 16:45:50,388 INFO L197 IcfgInterpreter]: Interpreting procedure aws_priority_queue_is_valid with input of size 40 for LOIs [2023-12-02 16:45:53,295 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 70 for LOIs [2023-12-02 16:45:54,129 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 120 for LOIs [2023-12-02 16:45:54,929 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 108 for LOIs [2023-12-02 16:45:54,991 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:48:00,468 WARN L293 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 2153 DAG size of output: 2151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)