./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/printf-2.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_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/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_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/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_764d9ff8-ce59-4291-9a8b-dd3187afab31/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 a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:15:15,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:15:15,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:15:15,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:15:15,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:15:15,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:15:15,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:15:15,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:15:15,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:15:15,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:15:15,746 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:15:15,746 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:15:15,747 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:15:15,749 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:15:15,749 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:15:15,749 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:15:15,750 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:15:15,750 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:15:15,751 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:15:15,751 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:15:15,752 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:15:15,752 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:15:15,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:15:15,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:15:15,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:15:15,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:15:15,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:15:15,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:15:15,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:15:15,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:15:15,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:15:15,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:15:15,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:15:15,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:15:15,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:15,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:15:15,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:15:15,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:15:15,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:15:15,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:15:15,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:15:15,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:15:15,761 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:15:15,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:15:15,762 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-24 23:15:16,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:15:16,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:15:16,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:15:16,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:15:16,123 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:15:16,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-24 23:15:19,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:15:19,700 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:15:19,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-24 23:15:19,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/data/25d59fae8/2de49cff3e91478c986201b518d5b34c/FLAGe22ecfc2d [2023-11-24 23:15:19,764 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/data/25d59fae8/2de49cff3e91478c986201b518d5b34c [2023-11-24 23:15:19,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:15:19,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:15:19,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:19,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:15:19,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:15:19,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:19" (1/1) ... [2023-11-24 23:15:19,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae8cf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:19, skipping insertion in model container [2023-11-24 23:15:19,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:19" (1/1) ... [2023-11-24 23:15:19,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:15:21,438 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-24 23:15:21,443 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-24 23:15:21,445 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-24 23:15:21,447 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-24 23:15:21,449 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-24 23:15:21,458 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-24 23:15:21,472 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-24 23:15:21,477 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-24 23:15:21,479 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-24 23:15:21,482 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-24 23:15:21,486 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-24 23:15:21,488 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-24 23:15:21,500 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-24 23:15:21,512 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-24 23:15:21,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:21,773 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:15:21,890 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-24 23:15:21,891 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-24 23:15:21,893 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-24 23:15:21,894 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-24 23:15:21,895 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-24 23:15:21,903 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-24 23:15:21,914 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-24 23:15:21,917 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-24 23:15:21,920 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-24 23:15:21,924 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-24 23:15:21,927 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-24 23:15:21,929 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-24 23:15:21,931 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-24 23:15:21,934 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_764d9ff8-ce59-4291-9a8b-dd3187afab31/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-24 23:15:22,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:22,272 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,272 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,272 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,273 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,273 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,273 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,273 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:22,282 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:15:22,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22 WrapperNode [2023-11-24 23:15:22,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:22,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:22,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:15:22,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:15:22,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,496 INFO L138 Inliner]: procedures = 648, calls = 511, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1570 [2023-11-24 23:15:22,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:22,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:15:22,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:15:22,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:15:22,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:15:22,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:15:22,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:15:22,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:15:22,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (1/1) ... [2023-11-24 23:15:22,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:22,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:15:22,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:15:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:15:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:15:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-24 23:15:22,818 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-24 23:15:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-24 23:15:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:15:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:15:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-24 23:15:22,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-24 23:15:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:15:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:15:22,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:15:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:15:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:15:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-24 23:15:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-24 23:15:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-24 23:15:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-24 23:15:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:15:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:15:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:15:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:15:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:15:22,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:15:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:15:22,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:15:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:15:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:15:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-24 23:15:22,822 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-24 23:15:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-24 23:15:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-24 23:15:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:15:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:15:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-24 23:15:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-24 23:15:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:15:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:15:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:15:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-24 23:15:22,824 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-24 23:15:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-24 23:15:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:15:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-24 23:15:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-24 23:15:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-24 23:15:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-24 23:15:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-24 23:15:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:15:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:15:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-24 23:15:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-24 23:15:23,440 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:15:23,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:15:25,093 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:15:25,588 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:15:25,590 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-24 23:15:25,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:25 BoogieIcfgContainer [2023-11-24 23:15:25,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:15:25,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:15:25,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:15:25,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:15:25,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:15:19" (1/3) ... [2023-11-24 23:15:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71578051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:25, skipping insertion in model container [2023-11-24 23:15:25,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:22" (2/3) ... [2023-11-24 23:15:25,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71578051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:25, skipping insertion in model container [2023-11-24 23:15:25,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:25" (3/3) ... [2023-11-24 23:15:25,608 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-24 23:15:25,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:15:25,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-24 23:15:25,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:15:25,715 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;@2651e620, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:15:25,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-24 23:15:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 235 states have (on average 1.5404255319148936) internal successors, (362), 250 states have internal predecessors, (362), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 23:15:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:15:25,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:25,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:25,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-24 23:15:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1360148835, now seen corresponding path program 1 times [2023-11-24 23:15:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:25,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636311748] [2023-11-24 23:15:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:26,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:26,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636311748] [2023-11-24 23:15:26,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636311748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:26,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:15:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195928073] [2023-11-24 23:15:26,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:26,575 INFO L87 Difference]: Start difference. First operand has 303 states, 235 states have (on average 1.5404255319148936) internal successors, (362), 250 states have internal predecessors, (362), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:27,042 INFO L93 Difference]: Finished difference Result 605 states and 902 transitions. [2023-11-24 23:15:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:27,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-24 23:15:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:27,071 INFO L225 Difference]: With dead ends: 605 [2023-11-24 23:15:27,071 INFO L226 Difference]: Without dead ends: 295 [2023-11-24 23:15:27,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:27,100 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:27,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:15:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-24 23:15:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-24 23:15:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 244 states have internal predecessors, (323), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:15:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 399 transitions. [2023-11-24 23:15:27,169 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 399 transitions. Word has length 32 [2023-11-24 23:15:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:27,169 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 399 transitions. [2023-11-24 23:15:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 399 transitions. [2023-11-24 23:15:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 23:15:27,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:27,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:27,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:15:27,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-24 23:15:27,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash 395586293, now seen corresponding path program 1 times [2023-11-24 23:15:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484899078] [2023-11-24 23:15:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:27,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:27,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484899078] [2023-11-24 23:15:27,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484899078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491834851] [2023-11-24 23:15:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:27,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:27,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:27,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:15:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:27,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:15:27,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:28,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:15:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491834851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:15:28,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [90593631] [2023-11-24 23:15:28,097 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-24 23:15:28,097 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:15:28,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:15:28,106 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:15:28,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:15:33,565 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-24 23:15:33,609 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:15:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [90593631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:35,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:15:35,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2023-11-24 23:15:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247108524] [2023-11-24 23:15:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:15:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:15:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:15:35,591 INFO L87 Difference]: Start difference. First operand 295 states and 399 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:39,034 INFO L93 Difference]: Finished difference Result 586 states and 790 transitions. [2023-11-24 23:15:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:15:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-24 23:15:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:39,040 INFO L225 Difference]: With dead ends: 586 [2023-11-24 23:15:39,040 INFO L226 Difference]: Without dead ends: 298 [2023-11-24 23:15:39,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:15:39,044 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 0 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:39,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1385 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-24 23:15:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-24 23:15:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-24 23:15:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 232 states have (on average 1.4008620689655173) internal successors, (325), 246 states have internal predecessors, (325), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:15:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 401 transitions. [2023-11-24 23:15:39,081 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 401 transitions. Word has length 36 [2023-11-24 23:15:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:39,081 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 401 transitions. [2023-11-24 23:15:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 401 transitions. [2023-11-24 23:15:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:15:39,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:39,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:39,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:15:39,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:39,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-24 23:15:39,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash -572363463, now seen corresponding path program 1 times [2023-11-24 23:15:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007536309] [2023-11-24 23:15:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:15:39,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007536309] [2023-11-24 23:15:39,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007536309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032290030] [2023-11-24 23:15:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:39,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:39,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:39,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:39,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:15:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:40,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:15:40,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:15:40,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032290030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:15:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-24 23:15:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091341416] [2023-11-24 23:15:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:40,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:15:40,159 INFO L87 Difference]: Start difference. First operand 298 states and 401 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:40,450 INFO L93 Difference]: Finished difference Result 589 states and 795 transitions. [2023-11-24 23:15:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-24 23:15:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:40,453 INFO L225 Difference]: With dead ends: 589 [2023-11-24 23:15:40,453 INFO L226 Difference]: Without dead ends: 299 [2023-11-24 23:15:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:15:40,456 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 0 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:40,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 665 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:15:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-24 23:15:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-24 23:15:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 233 states have (on average 1.3991416309012876) internal successors, (326), 247 states have internal predecessors, (326), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:15:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 402 transitions. [2023-11-24 23:15:40,488 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 402 transitions. Word has length 38 [2023-11-24 23:15:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:40,489 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 402 transitions. [2023-11-24 23:15:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 402 transitions. [2023-11-24 23:15:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 23:15:40,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:40,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:40,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:15:40,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:40,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-24 23:15:40,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash 437359880, now seen corresponding path program 1 times [2023-11-24 23:15:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054340180] [2023-11-24 23:15:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:40,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:15:40,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:40,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054340180] [2023-11-24 23:15:40,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054340180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770849928] [2023-11-24 23:15:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:40,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:40,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_764d9ff8-ce59-4291-9a8b-dd3187afab31/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:15:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:41,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:15:41,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:15:41,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:15:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:15:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770849928] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:15:41,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698747247] [2023-11-24 23:15:41,506 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-24 23:15:41,506 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:15:41,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:15:41,507 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:15:41,507 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:15:55,966 INFO L197 IcfgInterpreter]: Interpreting procedure print_direc with input of size 72 for LOIs [2023-11-24 23:15:56,029 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-24 23:15:56,061 INFO L180 IcfgInterpreter]: Interpretation finished