./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:52,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:52,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:56:52,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:52,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:52,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:52,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:52,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:52,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:52,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:52,781 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:52,783 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:52,783 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:52,785 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:52,786 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:52,786 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:52,787 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:52,787 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:52,788 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:52,788 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:52,789 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:52,789 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:52,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:52,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:52,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:52,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:52,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:52,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:52,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:52,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:52,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:52,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:52,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:52,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:52,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:52,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:52,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:52,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:52,799 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:52,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:52,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:52,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:52,800 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:52,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:52,801 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_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2023-11-24 23:56:53,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:53,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:53,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:53,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:53,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:53,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2023-11-24 23:56:56,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:56,905 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:56,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2023-11-24 23:56:56,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/data/155182dea/8e1bcd4a617b4c00813bebcdee7c1d6e/FLAGcab7e0b25 [2023-11-24 23:56:56,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/data/155182dea/8e1bcd4a617b4c00813bebcdee7c1d6e [2023-11-24 23:56:56,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:56,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:56,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:56,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:56,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:56,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:56" (1/1) ... [2023-11-24 23:56:56,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d332a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:56, skipping insertion in model container [2023-11-24 23:56:56,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:56" (1/1) ... [2023-11-24 23:56:57,150 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:57,435 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_c42e7109-ed74-4aa5-b73f-44fef5c798ad/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2023-11-24 23:56:57,444 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_c42e7109-ed74-4aa5-b73f-44fef5c798ad/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2023-11-24 23:56:58,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,667 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,669 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:58,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:56:59,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:56:59,272 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:56:59,274 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:56:59,278 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:56:59,284 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:56:59,286 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:56:59,287 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:56:59,288 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:56:59,294 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:56:59,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:59,592 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:59,608 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_c42e7109-ed74-4aa5-b73f-44fef5c798ad/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2023-11-24 23:56:59,609 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_c42e7109-ed74-4aa5-b73f-44fef5c798ad/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2023-11-24 23:56:59,670 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,670 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,681 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,691 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,694 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,695 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,696 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,698 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,758 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:56:59,760 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:56:59,763 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:56:59,765 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:56:59,767 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:56:59,769 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:56:59,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:56:59,773 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:56:59,778 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:56:59,779 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:56:59,845 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:56:59,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2023-11-24 23:56:59,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:57:00,200 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,200 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,201 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,202 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,203 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:00,210 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:57:00,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00 WrapperNode [2023-11-24 23:57:00,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:57:00,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:00,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:57:00,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:57:00,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,400 INFO L138 Inliner]: procedures = 690, calls = 1685, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2023-11-24 23:57:00,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:00,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:57:00,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:57:00,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:57:00,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:57:00,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:57:00,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:57:00,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:57:00,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (1/1) ... [2023-11-24 23:57:00,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:57:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:00,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:57:00,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:57:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2023-11-24 23:57:00,635 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2023-11-24 23:57:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:57:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-24 23:57:00,636 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-24 23:57:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-24 23:57:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-24 23:57:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:57:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:57:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:57:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:57:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:57:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:57:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:57:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:57:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:57:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:57:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:57:00,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:57:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:57:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:57:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-24 23:57:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-24 23:57:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:57:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:57:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-24 23:57:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-24 23:57:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:57:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:57:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:57:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:57:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:57:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:57:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:57:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:57:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:57:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:57:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2023-11-24 23:57:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2023-11-24 23:57:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2023-11-24 23:57:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2023-11-24 23:57:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:57:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:57:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:57:01,025 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:57:01,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:57:02,074 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:57:02,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:57:02,338 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:57:02,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:02 BoogieIcfgContainer [2023-11-24 23:57:02,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:57:02,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:57:02,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:57:02,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:57:02,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:56" (1/3) ... [2023-11-24 23:57:02,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfeadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:02, skipping insertion in model container [2023-11-24 23:57:02,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:00" (2/3) ... [2023-11-24 23:57:02,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfeadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:02, skipping insertion in model container [2023-11-24 23:57:02,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:02" (3/3) ... [2023-11-24 23:57:02,353 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2023-11-24 23:57:02,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:57:02,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:57:02,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:57:02,469 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;@48b5e42a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:57:02,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:57:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-24 23:57:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:57:02,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:02,498 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:02,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:02,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1341986318, now seen corresponding path program 1 times [2023-11-24 23:57:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251584202] [2023-11-24 23:57:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-24 23:57:03,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251584202] [2023-11-24 23:57:03,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251584202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144832720] [2023-11-24 23:57:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:03,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:03,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:57:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:04,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:57:04,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:57:04,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144832720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:04,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-24 23:57:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033573755] [2023-11-24 23:57:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:57:04,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:57:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:57:04,452 INFO L87 Difference]: Start difference. First operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:57:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:05,019 INFO L93 Difference]: Finished difference Result 281 states and 414 transitions. [2023-11-24 23:57:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:57:05,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 67 [2023-11-24 23:57:05,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:05,033 INFO L225 Difference]: With dead ends: 281 [2023-11-24 23:57:05,033 INFO L226 Difference]: Without dead ends: 155 [2023-11-24 23:57:05,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:57:05,045 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 29 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:05,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 604 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:57:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-24 23:57:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-24 23:57:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2023-11-24 23:57:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2023-11-24 23:57:05,129 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 67 [2023-11-24 23:57:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:05,130 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2023-11-24 23:57:05,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:57:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2023-11-24 23:57:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:57:05,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:05,135 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:05,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:05,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:05,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:05,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:05,341 INFO L85 PathProgramCache]: Analyzing trace with hash -721751912, now seen corresponding path program 1 times [2023-11-24 23:57:05,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:05,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836883430] [2023-11-24 23:57:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:05,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:05,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:57:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303317600] [2023-11-24 23:57:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:05,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:05,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:57:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:06,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:57:06,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-24 23:57:06,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:06,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836883430] [2023-11-24 23:57:06,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:57:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303317600] [2023-11-24 23:57:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303317600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:57:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456515072] [2023-11-24 23:57:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:57:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:57:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:57:06,122 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-24 23:57:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:06,870 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2023-11-24 23:57:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:57:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 76 [2023-11-24 23:57:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:06,874 INFO L225 Difference]: With dead ends: 270 [2023-11-24 23:57:06,874 INFO L226 Difference]: Without dead ends: 155 [2023-11-24 23:57:06,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:57:06,879 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:06,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 857 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:57:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-24 23:57:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-24 23:57:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-24 23:57:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2023-11-24 23:57:06,903 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 76 [2023-11-24 23:57:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:06,904 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2023-11-24 23:57:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-24 23:57:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2023-11-24 23:57:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-24 23:57:06,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:06,907 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 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] [2023-11-24 23:57:06,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:07,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:07,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -135307188, now seen corresponding path program 2 times [2023-11-24 23:57:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:07,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316504628] [2023-11-24 23:57:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:07,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:57:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486769581] [2023-11-24 23:57:07,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:57:07,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:07,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:07,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:07,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:57:07,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:57:07,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:57:07,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:57:07,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-24 23:57:07,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:07,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:07,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316504628] [2023-11-24 23:57:07,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:57:07,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486769581] [2023-11-24 23:57:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486769581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:07,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:07,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:57:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092985813] [2023-11-24 23:57:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:07,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:57:07,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:57:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:07,903 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-24 23:57:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:08,376 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2023-11-24 23:57:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:57:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 85 [2023-11-24 23:57:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:08,380 INFO L225 Difference]: With dead ends: 268 [2023-11-24 23:57:08,380 INFO L226 Difference]: Without dead ends: 155 [2023-11-24 23:57:08,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:08,383 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:08,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 696 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:57:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-24 23:57:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-24 23:57:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-11-24 23:57:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2023-11-24 23:57:08,406 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 85 [2023-11-24 23:57:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2023-11-24 23:57:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-24 23:57:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2023-11-24 23:57:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-24 23:57:08,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:08,410 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:08,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:08,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:08,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:08,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash 103371662, now seen corresponding path program 3 times [2023-11-24 23:57:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:08,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266622524] [2023-11-24 23:57:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:08,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:08,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:57:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710629737] [2023-11-24 23:57:08,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:57:08,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:08,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:08,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:57:09,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:57:09,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:57:09,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:57:09,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:57:09,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:09,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266622524] [2023-11-24 23:57:09,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:57:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710629737] [2023-11-24 23:57:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710629737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:09,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:09,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 23:57:09,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561082654] [2023-11-24 23:57:09,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:09,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:57:09,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:57:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:57:09,548 INFO L87 Difference]: Start difference. First operand 155 states and 212 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-24 23:57:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:10,371 INFO L93 Difference]: Finished difference Result 277 states and 384 transitions. [2023-11-24 23:57:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:57:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2023-11-24 23:57:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:10,376 INFO L225 Difference]: With dead ends: 277 [2023-11-24 23:57:10,376 INFO L226 Difference]: Without dead ends: 165 [2023-11-24 23:57:10,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:57:10,379 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 69 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:10,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1167 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:57:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-24 23:57:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-11-24 23:57:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2023-11-24 23:57:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2023-11-24 23:57:10,416 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 94 [2023-11-24 23:57:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2023-11-24 23:57:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-24 23:57:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2023-11-24 23:57:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-24 23:57:10,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:10,421 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:10,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:10,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:10,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:10,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash 853097808, now seen corresponding path program 1 times [2023-11-24 23:57:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570915444] [2023-11-24 23:57:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:10,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:57:10,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557435865] [2023-11-24 23:57:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:10,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:10,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:10,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42e7109-ed74-4aa5-b73f-44fef5c798ad/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:57:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:11,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 365 conjunts are in the unsatisfiable core [2023-11-24 23:57:11,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:12,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:57:13,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 23:57:13,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 23:57:13,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 23:57:15,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:57:15,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:57:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:57:15,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:57:15,542 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:57:15,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 23:57:31,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 179 [2023-11-24 23:57:31,699 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:57:31,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 146 [2023-11-24 23:57:31,758 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:57:31,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 122 [2023-11-24 23:57:31,964 INFO L349 Elim1Store]: treesize reduction 39, result has 35.0 percent of original size [2023-11-24 23:57:31,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 76 [2023-11-24 23:57:31,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-11-24 23:57:32,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 49 [2023-11-24 23:57:32,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2023-11-24 23:57:33,664 INFO L349 Elim1Store]: treesize reduction 66, result has 42.6 percent of original size [2023-11-24 23:57:33,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 68 [2023-11-24 23:57:33,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:57:33,892 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-24 23:57:33,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-24 23:57:34,606 INFO L349 Elim1Store]: treesize reduction 66, result has 42.6 percent of original size [2023-11-24 23:57:34,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 68 [2023-11-24 23:57:34,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:57:34,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 23:57:34,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 23:57:34,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11