./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/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 8a38a43769c42d8669572ba16bfe2bf0ba7986e6a4cc5f2e35ff1bb4fb35c723 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:22:49,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:22:49,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:22:49,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:22:49,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:22:49,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:22:49,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:22:49,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:22:49,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:22:49,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:22:49,146 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:22:49,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:22:49,147 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:22:49,148 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:22:49,148 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:22:49,149 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:22:49,149 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:22:49,150 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:22:49,150 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:22:49,151 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:22:49,152 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:22:49,152 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:22:49,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:22:49,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:22:49,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:22:49,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:22:49,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:22:49,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:22:49,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:22:49,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:22:49,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:22:49,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:22:49,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:22:49,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:22:49,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:22:49,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:22:49,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:22:49,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:22:49,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:22:49,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:22:49,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:22:49,159 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:22:49,159 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:22:49,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:22:49,160 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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a38a43769c42d8669572ba16bfe2bf0ba7986e6a4cc5f2e35ff1bb4fb35c723 [2023-12-02 15:22:49,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:22:49,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:22:49,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:22:49,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:22:49,409 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:22:49,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i [2023-12-02 15:22:52,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:22:52,511 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:22:52,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i [2023-12-02 15:22:52,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/data/f4dd3e672/af09a91f2ac944cfb97ce8d3b628c709/FLAG58cd1461e [2023-12-02 15:22:52,557 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/data/f4dd3e672/af09a91f2ac944cfb97ce8d3b628c709 [2023-12-02 15:22:52,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:22:52,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:22:52,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:52,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:22:52,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:22:52,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:52" (1/1) ... [2023-12-02 15:22:52,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a77c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:52, skipping insertion in model container [2023-12-02 15:22:52,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:52" (1/1) ... [2023-12-02 15:22:52,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:22:52,940 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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i[4501,4514] [2023-12-02 15:22:52,946 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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i[4561,4574] [2023-12-02 15:22:53,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,609 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:53,958 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 15:22:53,960 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 15:22:53,961 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 15:22:53,962 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 15:22:53,964 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 15:22:53,965 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 15:22:53,966 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 15:22:53,967 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 15:22:53,967 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 15:22:53,968 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 15:22:54,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,217 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:54,284 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:22:54,296 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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i[4501,4514] [2023-12-02 15:22:54,296 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_0dda5cea-4b60-4c51-b4a7-346c6445d80f/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness_negated.i[4561,4574] [2023-12-02 15:22:54,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,347 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,390 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 15:22:54,392 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 15:22:54,392 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 15:22:54,393 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 15:22:54,393 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 15:22:54,394 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 15:22:54,394 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 15:22:54,394 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 15:22:54,395 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 15:22:54,396 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 15:22:54,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-12-02 15:22:54,540 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,547 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 15:22:54,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:54,799 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,799 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,800 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,800 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,800 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,800 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,801 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,802 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,802 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,802 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:54,810 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:22:54,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54 WrapperNode [2023-12-02 15:22:54,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:54,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:22:54,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:22:54,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:22:54,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:54,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:54,966 INFO L138 Inliner]: procedures = 696, calls = 1898, calls flagged for inlining = 57, calls inlined = 17, statements flattened = 1170 [2023-12-02 15:22:54,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:22:54,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:22:54,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:22:54,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:22:54,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:54,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:54,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:54,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:22:55,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:22:55,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:22:55,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:22:55,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (1/1) ... [2023-12-02 15:22:55,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:22:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:22:55,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:22:55,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:22:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-12-02 15:22:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-12-02 15:22:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-12-02 15:22:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-12-02 15:22:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-12-02 15:22:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-12-02 15:22:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:22:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-12-02 15:22:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-12-02 15:22:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 15:22:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 15:22:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 15:22:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 15:22:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-12-02 15:22:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-12-02 15:22:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-12-02 15:22:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-12-02 15:22:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:22:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 15:22:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 15:22:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:22:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:22:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:22:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:22:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:22:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-12-02 15:22:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-12-02 15:22:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-12-02 15:22:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-12-02 15:22:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:22:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:22:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 15:22:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 15:22:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-12-02 15:22:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-12-02 15:22:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 15:22:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 15:22:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 15:22:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 15:22:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-12-02 15:22:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-12-02 15:22:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-12-02 15:22:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-12-02 15:22:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-12-02 15:22:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-12-02 15:22:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:22:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:22:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:22:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:22:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-12-02 15:22:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-12-02 15:22:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-12-02 15:22:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-12-02 15:22:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-12-02 15:22:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-12-02 15:22:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:22:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-12-02 15:22:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-12-02 15:22:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:22:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:22:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2023-12-02 15:22:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2023-12-02 15:22:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-12-02 15:22:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-12-02 15:22:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 15:22:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 15:22:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 15:22:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 15:22:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-12-02 15:22:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-12-02 15:22:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:22:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-12-02 15:22:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-12-02 15:22:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-12-02 15:22:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-12-02 15:22:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 15:22:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 15:22:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 15:22:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 15:22:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:22:55,490 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:22:55,493 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:22:56,668 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:22:56,942 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:22:56,942 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-02 15:22:56,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:22:56 BoogieIcfgContainer [2023-12-02 15:22:56,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:22:56,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:22:56,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:22:56,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:22:56,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:22:52" (1/3) ... [2023-12-02 15:22:56,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:22:56, skipping insertion in model container [2023-12-02 15:22:56,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:54" (2/3) ... [2023-12-02 15:22:56,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:22:56, skipping insertion in model container [2023-12-02 15:22:56,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:22:56" (3/3) ... [2023-12-02 15:22:56,952 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness_negated.i [2023-12-02 15:22:56,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:22:56,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:22:57,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:22:57,033 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;@6153164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:22:57,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:22:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 475 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 243 states have internal predecessors, (287), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) [2023-12-02 15:22:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 15:22:57,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:57,057 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:57,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:22:57,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash 925600181, now seen corresponding path program 1 times [2023-12-02 15:22:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:22:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659803290] [2023-12-02 15:22:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:57,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:22:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-02 15:22:57,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:22:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659803290] [2023-12-02 15:22:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659803290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:22:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133237994] [2023-12-02 15:22:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:57,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:22:57,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:22:57,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:22:58,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:22:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:58,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:22:58,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 15:22:58,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133237994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:58,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:22:58,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-02 15:22:58,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004049109] [2023-12-02 15:22:58,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:22:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:22:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:22:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:22:58,813 INFO L87 Difference]: Start difference. First operand has 475 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 243 states have internal predecessors, (287), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 15:22:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:59,402 INFO L93 Difference]: Finished difference Result 909 states and 1377 transitions. [2023-12-02 15:22:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:22:59,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 147 [2023-12-02 15:22:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:59,421 INFO L225 Difference]: With dead ends: 909 [2023-12-02 15:22:59,421 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 15:22:59,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:59,433 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 18 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:59,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2391 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:22:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 15:22:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-12-02 15:22:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 242 states have internal predecessors, (283), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (205), 197 states have call predecessors, (205), 197 states have call successors, (205) [2023-12-02 15:22:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 687 transitions. [2023-12-02 15:22:59,541 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 687 transitions. Word has length 147 [2023-12-02 15:22:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:59,542 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 687 transitions. [2023-12-02 15:22:59,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 15:22:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 687 transitions. [2023-12-02 15:22:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-02 15:22:59,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:59,547 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:59,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:22:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:22:59,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:22:59,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1452842146, now seen corresponding path program 1 times [2023-12-02 15:22:59,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:22:59,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885587610] [2023-12-02 15:22:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:22:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-02 15:23:00,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885587610] [2023-12-02 15:23:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885587610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:23:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809643971] [2023-12-02 15:23:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:00,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:00,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:23:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:01,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:23:01,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 15:23:01,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809643971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:23:01,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 15:23:01,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973249585] [2023-12-02 15:23:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:01,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:23:01,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:23:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:23:01,186 INFO L87 Difference]: Start difference. First operand 474 states and 687 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-12-02 15:23:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:02,178 INFO L93 Difference]: Finished difference Result 919 states and 1373 transitions. [2023-12-02 15:23:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:23:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 155 [2023-12-02 15:23:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:02,186 INFO L225 Difference]: With dead ends: 919 [2023-12-02 15:23:02,186 INFO L226 Difference]: Without dead ends: 487 [2023-12-02 15:23:02,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:23:02,191 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 33 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:02,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3367 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:23:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-02 15:23:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2023-12-02 15:23:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2023-12-02 15:23:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 733 transitions. [2023-12-02 15:23:02,244 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 733 transitions. Word has length 155 [2023-12-02 15:23:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 733 transitions. [2023-12-02 15:23:02,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-12-02 15:23:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 733 transitions. [2023-12-02 15:23:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 15:23:02,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:02,248 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:02,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 15:23:02,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:02,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1556341493, now seen corresponding path program 1 times [2023-12-02 15:23:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146231685] [2023-12-02 15:23:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:02,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:02,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524789637] [2023-12-02 15:23:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:02,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:23:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:03,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:23:03,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 15:23:03,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:03,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146231685] [2023-12-02 15:23:03,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524789637] [2023-12-02 15:23:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524789637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:03,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:03,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:23:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902767065] [2023-12-02 15:23:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:03,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:23:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:23:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:23:03,301 INFO L87 Difference]: Start difference. First operand 485 states and 733 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-02 15:23:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:03,898 INFO L93 Difference]: Finished difference Result 934 states and 1430 transitions. [2023-12-02 15:23:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:23:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 164 [2023-12-02 15:23:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:03,904 INFO L225 Difference]: With dead ends: 934 [2023-12-02 15:23:03,904 INFO L226 Difference]: Without dead ends: 491 [2023-12-02 15:23:03,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 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 15:23:03,908 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 25 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:03,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2972 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:23:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-02 15:23:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 485. [2023-12-02 15:23:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2023-12-02 15:23:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 733 transitions. [2023-12-02 15:23:03,947 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 733 transitions. Word has length 164 [2023-12-02 15:23:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:03,948 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 733 transitions. [2023-12-02 15:23:03,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-02 15:23:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 733 transitions. [2023-12-02 15:23:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-02 15:23:03,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:03,952 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:03,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:23:04,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:04,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:04,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:04,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1258100546, now seen corresponding path program 1 times [2023-12-02 15:23:04,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:04,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626426372] [2023-12-02 15:23:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:04,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:04,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167912032] [2023-12-02 15:23:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:04,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:04,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:04,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:23:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:04,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:23:04,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-02 15:23:05,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:05,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:05,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626426372] [2023-12-02 15:23:05,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:05,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167912032] [2023-12-02 15:23:05,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167912032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:05,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:05,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 15:23:05,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240070711] [2023-12-02 15:23:05,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:05,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:23:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:23:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:23:05,021 INFO L87 Difference]: Start difference. First operand 485 states and 733 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-12-02 15:23:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:06,171 INFO L93 Difference]: Finished difference Result 936 states and 1427 transitions. [2023-12-02 15:23:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:23:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) Word has length 172 [2023-12-02 15:23:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:06,177 INFO L225 Difference]: With dead ends: 936 [2023-12-02 15:23:06,177 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 15:23:06,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:23:06,180 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 48 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:06,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3898 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:23:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 15:23:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 485. [2023-12-02 15:23:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2023-12-02 15:23:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 733 transitions. [2023-12-02 15:23:06,207 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 733 transitions. Word has length 172 [2023-12-02 15:23:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 733 transitions. [2023-12-02 15:23:06,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-12-02 15:23:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 733 transitions. [2023-12-02 15:23:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:23:06,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:06,211 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:06,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:06,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 859221415, now seen corresponding path program 2 times [2023-12-02 15:23:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491329881] [2023-12-02 15:23:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:06,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354687814] [2023-12-02 15:23:06,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:23:06,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:06,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:06,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:23:07,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:23:07,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:07,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:23:07,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-02 15:23:07,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:07,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491329881] [2023-12-02 15:23:07,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354687814] [2023-12-02 15:23:07,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354687814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:07,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:07,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:23:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823377287] [2023-12-02 15:23:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:07,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:23:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:23:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:23:07,083 INFO L87 Difference]: Start difference. First operand 485 states and 733 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-02 15:23:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:07,687 INFO L93 Difference]: Finished difference Result 493 states and 741 transitions. [2023-12-02 15:23:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:23:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) Word has length 181 [2023-12-02 15:23:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:07,693 INFO L225 Difference]: With dead ends: 493 [2023-12-02 15:23:07,693 INFO L226 Difference]: Without dead ends: 491 [2023-12-02 15:23:07,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:23:07,695 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 5 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:07,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3110 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:23:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-02 15:23:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 490. [2023-12-02 15:23:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 250 states have (on average 1.184) internal successors, (296), 253 states have internal predecessors, (296), 202 states have call successors, (202), 35 states have call predecessors, (202), 36 states have return successors, (240), 201 states have call predecessors, (240), 200 states have call successors, (240) [2023-12-02 15:23:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 738 transitions. [2023-12-02 15:23:07,730 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 738 transitions. Word has length 181 [2023-12-02 15:23:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:07,731 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 738 transitions. [2023-12-02 15:23:07,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-02 15:23:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 738 transitions. [2023-12-02 15:23:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-02 15:23:07,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:07,735 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:07,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:23:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:07,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1896716562, now seen corresponding path program 3 times [2023-12-02 15:23:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:07,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828850594] [2023-12-02 15:23:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:08,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039231274] [2023-12-02 15:23:08,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:23:08,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:08,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:08,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:23:08,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:23:08,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:08,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:23:08,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 15:23:08,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:08,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828850594] [2023-12-02 15:23:08,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039231274] [2023-12-02 15:23:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039231274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:08,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:08,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 15:23:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290185014] [2023-12-02 15:23:08,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:23:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:08,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:23:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:23:08,493 INFO L87 Difference]: Start difference. First operand 490 states and 738 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-02 15:23:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:09,570 INFO L93 Difference]: Finished difference Result 1003 states and 1532 transitions. [2023-12-02 15:23:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:23:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 190 [2023-12-02 15:23:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:09,577 INFO L225 Difference]: With dead ends: 1003 [2023-12-02 15:23:09,577 INFO L226 Difference]: Without dead ends: 571 [2023-12-02 15:23:09,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:23:09,581 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 71 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:09,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 4292 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:23:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-02 15:23:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 563. [2023-12-02 15:23:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 292 states have (on average 1.1986301369863013) internal successors, (350), 297 states have internal predecessors, (350), 231 states have call successors, (231), 36 states have call predecessors, (231), 38 states have return successors, (283), 229 states have call predecessors, (283), 229 states have call successors, (283) [2023-12-02 15:23:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 864 transitions. [2023-12-02 15:23:09,633 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 864 transitions. Word has length 190 [2023-12-02 15:23:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:09,634 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 864 transitions. [2023-12-02 15:23:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-02 15:23:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 864 transitions. [2023-12-02 15:23:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 15:23:09,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:09,639 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:09,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:23:09,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:09,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1031718097, now seen corresponding path program 4 times [2023-12-02 15:23:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290370624] [2023-12-02 15:23:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:09,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709527829] [2023-12-02 15:23:09,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:23:09,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:09,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:09,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:09,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:23:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:10,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:23:10,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-02 15:23:10,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:10,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290370624] [2023-12-02 15:23:10,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709527829] [2023-12-02 15:23:10,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709527829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:10,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:23:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282585854] [2023-12-02 15:23:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:23:10,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:23:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:23:10,802 INFO L87 Difference]: Start difference. First operand 563 states and 864 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-02 15:23:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:11,475 INFO L93 Difference]: Finished difference Result 954 states and 1447 transitions. [2023-12-02 15:23:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:23:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 199 [2023-12-02 15:23:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:11,480 INFO L225 Difference]: With dead ends: 954 [2023-12-02 15:23:11,480 INFO L226 Difference]: Without dead ends: 492 [2023-12-02 15:23:11,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 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 15:23:11,485 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 85 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:11,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 3474 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:23:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-02 15:23:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-12-02 15:23:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 251 states have (on average 1.1832669322709164) internal successors, (297), 255 states have internal predecessors, (297), 202 states have call successors, (202), 35 states have call predecessors, (202), 37 states have return successors, (244), 201 states have call predecessors, (244), 200 states have call successors, (244) [2023-12-02 15:23:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 743 transitions. [2023-12-02 15:23:11,519 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 743 transitions. Word has length 199 [2023-12-02 15:23:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:11,519 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 743 transitions. [2023-12-02 15:23:11,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-02 15:23:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 743 transitions. [2023-12-02 15:23:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-02 15:23:11,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:11,523 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:11,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:23:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:11,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1335314395, now seen corresponding path program 1 times [2023-12-02 15:23:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691032116] [2023-12-02 15:23:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:11,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:11,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600408202] [2023-12-02 15:23:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:11,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:11,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:11,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:23:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:12,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:23:12,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-02 15:23:12,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:12,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691032116] [2023-12-02 15:23:12,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600408202] [2023-12-02 15:23:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600408202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:12,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 15:23:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811601947] [2023-12-02 15:23:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:23:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:23:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:23:12,648 INFO L87 Difference]: Start difference. First operand 492 states and 743 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-02 15:23:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:13,651 INFO L93 Difference]: Finished difference Result 939 states and 1428 transitions. [2023-12-02 15:23:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:23:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) Word has length 198 [2023-12-02 15:23:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:13,657 INFO L225 Difference]: With dead ends: 939 [2023-12-02 15:23:13,657 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 15:23:13,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 192 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 15:23:13,661 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 100 mSDsluCounter, 3813 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:13,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 4389 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:23:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 15:23:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2023-12-02 15:23:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 256 states have (on average 1.18359375) internal successors, (303), 259 states have internal predecessors, (303), 203 states have call successors, (203), 35 states have call predecessors, (203), 37 states have return successors, (245), 203 states have call predecessors, (245), 201 states have call successors, (245) [2023-12-02 15:23:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 751 transitions. [2023-12-02 15:23:13,697 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 751 transitions. Word has length 198 [2023-12-02 15:23:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:13,698 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 751 transitions. [2023-12-02 15:23:13,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-02 15:23:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 751 transitions. [2023-12-02 15:23:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 15:23:13,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:13,701 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:13,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:23:13,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:23:13,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:13,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1723796402, now seen corresponding path program 2 times [2023-12-02 15:23:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48565882] [2023-12-02 15:23:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:14,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070868234] [2023-12-02 15:23:14,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:23:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:14,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:14,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:14,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dda5cea-4b60-4c51-b4a7-346c6445d80f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:23:14,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:23:14,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:14,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 15:23:14,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-02 15:23:15,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-02 15:23:15,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48565882] [2023-12-02 15:23:15,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:23:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070868234] [2023-12-02 15:23:15,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070868234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178413196] [2023-12-02 15:23:15,382 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2023-12-02 15:23:15,383 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:23:15,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:23:15,393 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:23:15,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:55,809 WARN L293 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 2303 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:32:01,183 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 2303 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:32:02,975 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:32:03,000 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:34:33,230 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_size_t with input of size 38 for LOIs [2023-12-02 15:34:33,234 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2277 for LOIs [2023-12-02 15:35:27,731 INFO L197 IcfgInterpreter]: Interpreting procedure aws_priority_queue_is_valid with input of size 231 for LOIs [2023-12-02 15:35:29,264 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:35:29,287 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:35:32,153 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:35:36,176 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 263 for LOIs [2023-12-02 15:35:39,234 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 313 for LOIs [2023-12-02 15:35:43,147 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 301 for LOIs [2023-12-02 15:35:43,510 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 77 for LOIs [2023-12-02 15:35:44,082 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 38 for LOIs [2023-12-02 15:35:44,087 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 108 for LOIs [2023-12-02 15:35:44,173 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 36 for LOIs [2023-12-02 15:35:44,206 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 36 for LOIs [2023-12-02 15:35:44,209 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:30,026 WARN L293 SmtUtils]: Spent 44.90s on a formula simplification. DAG size of input: 2147 DAG size of output: 2145 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)