./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/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_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire --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 0.2.3-dev-30e01a7 [2023-11-23 21:21:36,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:36,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:21:36,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:36,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:36,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:36,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:36,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:36,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:36,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:36,737 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:36,738 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:36,739 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:36,739 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:36,740 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:36,741 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:36,742 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:36,742 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:36,743 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:36,744 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:36,744 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:36,753 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:36,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:36,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:36,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:36,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:36,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:36,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:36,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:36,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:36,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:36,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:36,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:36,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:36,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:36,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:36,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:36,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:36,764 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:36,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:36,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:36,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:36,766 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:36,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:36,767 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_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-23 21:21:37,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:37,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:37,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:37,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:37,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:37,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-23 21:21:40,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:41,148 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:41,149 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-23 21:21:41,195 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/data/e30560014/b6fb67474f0f4b839792dad97b25f849/FLAGf69971c93 [2023-11-23 21:21:41,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/data/e30560014/b6fb67474f0f4b839792dad97b25f849 [2023-11-23 21:21:41,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:41,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:41,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:41,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:41,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:41,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:41" (1/1) ... [2023-11-23 21:21:41,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e28aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:41, skipping insertion in model container [2023-11-23 21:21:41,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:41" (1/1) ... [2023-11-23 21:21:41,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:43,385 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-23 21:21:43,391 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-23 21:21:43,394 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-23 21:21:43,396 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-23 21:21:43,398 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-23 21:21:43,410 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-23 21:21:43,425 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-23 21:21:43,428 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-23 21:21:43,431 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-23 21:21:43,434 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-23 21:21:43,446 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-23 21:21:43,448 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-23 21:21:43,452 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-23 21:21:43,470 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-23 21:21:43,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:43,585 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:43,699 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-23 21:21:43,701 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-23 21:21:43,702 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-23 21:21:43,704 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-23 21:21:43,705 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-23 21:21:43,713 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-23 21:21:43,722 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-23 21:21:43,724 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-23 21:21:43,726 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-23 21:21:43,729 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-23 21:21:43,732 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-23 21:21:43,734 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-23 21:21:43,737 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-23 21:21:43,740 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_be621653-7408-43ef-9e97-94e6ee61cd22/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-23 21:21:43,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:44,146 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,147 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,147 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,147 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,147 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,147 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,148 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:44,158 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:44,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44 WrapperNode [2023-11-23 21:21:44,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:44,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:44,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:44,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:44,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,424 INFO L138 Inliner]: procedures = 648, calls = 511, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1562 [2023-11-23 21:21:44,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:44,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:44,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:44,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:44,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:44,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:44,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:44,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:44,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (1/1) ... [2023-11-23 21:21:44,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:44,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:44,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:21:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:21:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-23 21:21:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-23 21:21:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-23 21:21:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:21:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:21:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-23 21:21:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-23 21:21:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:21:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:21:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:21:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:21:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:21:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-23 21:21:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-23 21:21:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-23 21:21:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 21:21:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:21:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:21:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:21:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:21:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:21:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:21:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:21:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-23 21:21:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-23 21:21:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-23 21:21:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-23 21:21:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:21:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:21:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-23 21:21:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-23 21:21:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:21:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:21:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:21:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-23 21:21:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-23 21:21:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:21:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:21:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-23 21:21:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-23 21:21:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-23 21:21:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-23 21:21:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-23 21:21:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:21:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-23 21:21:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-23 21:21:45,390 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:45,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:47,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:21:47,873 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:21:47,873 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-23 21:21:47,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:47 BoogieIcfgContainer [2023-11-23 21:21:47,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:21:47,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:21:47,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:21:47,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:21:47,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:41" (1/3) ... [2023-11-23 21:21:47,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6094ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:47, skipping insertion in model container [2023-11-23 21:21:47,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:44" (2/3) ... [2023-11-23 21:21:47,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6094ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:47, skipping insertion in model container [2023-11-23 21:21:47,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:47" (3/3) ... [2023-11-23 21:21:47,893 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-23 21:21:47,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:21:47,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-23 21:21:48,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:21:48,016 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;@31bb24a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:21:48,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-23 21:21:48,024 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) [2023-11-23 21:21:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:21:48,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:48,057 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] [2023-11-23 21:21:48,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-23 21:21:48,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1360148835, now seen corresponding path program 1 times [2023-11-23 21:21:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633842422] [2023-11-23 21:21:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:48,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:48,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633842422] [2023-11-23 21:21:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633842422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:48,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:48,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411030549] [2023-11-23 21:21:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:48,946 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) [2023-11-23 21:21:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:49,444 INFO L93 Difference]: Finished difference Result 605 states and 902 transitions. [2023-11-23 21:21:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:49,447 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 [2023-11-23 21:21:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:49,460 INFO L225 Difference]: With dead ends: 605 [2023-11-23 21:21:49,461 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 21:21:49,469 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 [2023-11-23 21:21:49,473 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:49,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:21:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 21:21:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-23 21:21:49,567 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) [2023-11-23 21:21:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 399 transitions. [2023-11-23 21:21:49,572 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 399 transitions. Word has length 32 [2023-11-23 21:21:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:49,573 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 399 transitions. [2023-11-23 21:21:49,573 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) [2023-11-23 21:21:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 399 transitions. [2023-11-23 21:21:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:21:49,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:49,577 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] [2023-11-23 21:21:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:21:49,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-23 21:21:49,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 395586293, now seen corresponding path program 1 times [2023-11-23 21:21:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958189517] [2023-11-23 21:21:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:50,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958189517] [2023-11-23 21:21:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958189517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:21:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794014810] [2023-11-23 21:21:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:50,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:21:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:50,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:21:50,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:21:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:50,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:21:50,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:21:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:50,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:21:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794014810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:21:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869094315] [2023-11-23 21:21:50,667 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-23 21:21:50,667 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:21:50,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:21:50,679 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:21:50,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:21:55,596 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-23 21:21:55,657 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:21:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1869094315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:57,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:21:57,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2023-11-23 21:21:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429365015] [2023-11-23 21:21:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:21:57,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:21:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:21:57,588 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) [2023-11-23 21:22:00,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:00,854 INFO L93 Difference]: Finished difference Result 586 states and 790 transitions. [2023-11-23 21:22:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:22:00,855 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 [2023-11-23 21:22:00,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:00,859 INFO L225 Difference]: With dead ends: 586 [2023-11-23 21:22:00,859 INFO L226 Difference]: Without dead ends: 298 [2023-11-23 21:22:00,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:22:00,862 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 0 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:00,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1385 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:22:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-23 21:22:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-23 21:22:00,890 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) [2023-11-23 21:22:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 401 transitions. [2023-11-23 21:22:00,893 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 401 transitions. Word has length 36 [2023-11-23 21:22:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:00,894 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 401 transitions. [2023-11-23 21:22:00,894 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) [2023-11-23 21:22:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 401 transitions. [2023-11-23 21:22:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:22:00,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:00,897 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] [2023-11-23 21:22:00,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:01,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-23 21:22:01,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -572363463, now seen corresponding path program 1 times [2023-11-23 21:22:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771432726] [2023-11-23 21:22:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:22:01,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771432726] [2023-11-23 21:22:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771432726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045774416] [2023-11-23 21:22:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:01,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:01,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:01,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:01,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:01,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:22:01,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:22:01,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:01,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045774416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:01,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:01,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:22:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924804015] [2023-11-23 21:22:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:01,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:01,850 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) [2023-11-23 21:22:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:02,143 INFO L93 Difference]: Finished difference Result 589 states and 795 transitions. [2023-11-23 21:22:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:02,143 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 [2023-11-23 21:22:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:02,146 INFO L225 Difference]: With dead ends: 589 [2023-11-23 21:22:02,147 INFO L226 Difference]: Without dead ends: 299 [2023-11-23 21:22:02,148 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 [2023-11-23 21:22:02,149 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 [2023-11-23 21:22:02,150 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] [2023-11-23 21:22:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-23 21:22:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-23 21:22:02,171 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) [2023-11-23 21:22:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 402 transitions. [2023-11-23 21:22:02,174 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 402 transitions. Word has length 38 [2023-11-23 21:22:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:02,175 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 402 transitions. [2023-11-23 21:22:02,175 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) [2023-11-23 21:22:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 402 transitions. [2023-11-23 21:22:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:22:02,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:02,177 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] [2023-11-23 21:22:02,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:02,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:02,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-23 21:22:02,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 437359880, now seen corresponding path program 1 times [2023-11-23 21:22:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:02,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816585608] [2023-11-23 21:22:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:22:02,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816585608] [2023-11-23 21:22:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816585608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033176001] [2023-11-23 21:22:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:02,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:02,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be621653-7408-43ef-9e97-94e6ee61cd22/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:22:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:03,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:22:03,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:22:03,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:22:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033176001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989281085] [2023-11-23 21:22:03,276 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-23 21:22:03,277 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:03,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:03,277 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:03,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:22:22,111 INFO L197 IcfgInterpreter]: Interpreting procedure print_direc with input of size 72 for LOIs [2023-11-23 21:22:22,185 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-23 21:22:22,212 INFO L180 IcfgInterpreter]: Interpretation finished