./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_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:31,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:31,827 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-28 23:51:31,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:31,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:31,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:31,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:31,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:31,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:31,854 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:31,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:31,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:31,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:31,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:31,857 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:31,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:31,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:31,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:31,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:31,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:31,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:31,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:31,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:31,861 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:31,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:31,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:31,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:31,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:31,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:31,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:31,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:31,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:31,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:31,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:31,866 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-28 23:51:32,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:32,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:32,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:32,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:32,103 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:32,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-28 23:51:34,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:35,150 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:35,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-28 23:51:35,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/data/dbb8db18c/548f4a53660e44edad77cedeac15bf25/FLAG472352b31 [2023-11-28 23:51:35,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/data/dbb8db18c/548f4a53660e44edad77cedeac15bf25 [2023-11-28 23:51:35,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:35,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:35,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:35,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:35,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:35,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:35" (1/1) ... [2023-11-28 23:51:35,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba15c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:35, skipping insertion in model container [2023-11-28 23:51:35,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:35" (1/1) ... [2023-11-28 23:51:35,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:36,454 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-28 23:51:36,459 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-28 23:51:36,461 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-28 23:51:36,462 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-28 23:51:36,463 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-28 23:51:36,471 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-28 23:51:36,481 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-28 23:51:36,483 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-28 23:51:36,485 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-28 23:51:36,487 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-28 23:51:36,491 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-28 23:51:36,493 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-28 23:51:36,496 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-28 23:51:36,499 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-28 23:51:36,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:36,593 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:36,668 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-28 23:51:36,668 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-28 23:51:36,669 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-28 23:51:36,670 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-28 23:51:36,671 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-28 23:51:36,676 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-28 23:51:36,681 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-28 23:51:36,683 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-28 23:51:36,684 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-28 23:51:36,686 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-28 23:51:36,688 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-28 23:51:36,690 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-28 23:51:36,691 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-28 23:51:36,693 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_63c23c81-bcf1-4a9a-a240-f97599a7719d/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-28 23:51:36,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:36,873 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,873 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,873 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,873 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,874 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,874 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,874 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:36,880 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:36,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36 WrapperNode [2023-11-28 23:51:36,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:36,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:36,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:36,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:36,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:36,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,021 INFO L138 Inliner]: procedures = 648, calls = 511, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1570 [2023-11-28 23:51:37,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:37,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:37,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:37,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:37,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,055 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-28 23:51:37,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:37,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:37,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:37,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:37,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (1/1) ... [2023-11-28 23:51:37,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:37,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:37,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:37,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-28 23:51:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-28 23:51:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-28 23:51:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-28 23:51:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-28 23:51:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-28 23:51:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-28 23:51:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-28 23:51:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:51:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-28 23:51:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-28 23:51:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-28 23:51:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-28 23:51:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-28 23:51:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-28 23:51:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-28 23:51:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-28 23:51:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-28 23:51:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-28 23:51:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:51:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:51:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-28 23:51:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-28 23:51:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-28 23:51:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-28 23:51:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-28 23:51:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-28 23:51:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-28 23:51:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-28 23:51:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-28 23:51:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-28 23:51:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-28 23:51:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-28 23:51:37,666 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:37,669 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:38,952 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:51:39,024 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:51:39,024 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-28 23:51:39,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:39 BoogieIcfgContainer [2023-11-28 23:51:39,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:51:39,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:51:39,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:51:39,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:51:39,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:35" (1/3) ... [2023-11-28 23:51:39,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e822946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:39, skipping insertion in model container [2023-11-28 23:51:39,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:36" (2/3) ... [2023-11-28 23:51:39,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e822946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:39, skipping insertion in model container [2023-11-28 23:51:39,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:39" (3/3) ... [2023-11-28 23:51:39,034 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-28 23:51:39,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:51:39,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-28 23:51:39,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:51:39,118 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=PETRI_NET, 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;@684fd164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:51:39,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-28 23:51:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 323 states have (on average 1.631578947368421) internal successors, (527), 338 states have internal predecessors, (527), 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) [2023-11-28 23:51:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:51:39,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:39,141 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, 1, 1, 1] [2023-11-28 23:51:39,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:39,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1032440798, now seen corresponding path program 1 times [2023-11-28 23:51:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:39,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099640554] [2023-11-28 23:51:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 23:51:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099640554] [2023-11-28 23:51:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099640554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:51:39,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007271228] [2023-11-28 23:51:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:51:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:51:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:51:39,711 INFO L87 Difference]: Start difference. First operand has 391 states, 323 states have (on average 1.631578947368421) internal successors, (527), 338 states have internal predecessors, (527), 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 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-28 23:51:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:39,984 INFO L93 Difference]: Finished difference Result 781 states and 1245 transitions. [2023-11-28 23:51:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:51:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 42 [2023-11-28 23:51:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:39,998 INFO L225 Difference]: With dead ends: 781 [2023-11-28 23:51:39,998 INFO L226 Difference]: Without dead ends: 380 [2023-11-28 23:51:40,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:51:40,008 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 0 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:40,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1054 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:51:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-28 23:51:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-28 23:51:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 315 states have (on average 1.4793650793650794) internal successors, (466), 329 states have internal predecessors, (466), 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) [2023-11-28 23:51:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 542 transitions. [2023-11-28 23:51:40,075 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 542 transitions. Word has length 42 [2023-11-28 23:51:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:40,075 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 542 transitions. [2023-11-28 23:51:40,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-28 23:51:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 542 transitions. [2023-11-28 23:51:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-28 23:51:40,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:40,080 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:40,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:51:40,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:40,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 70884883, now seen corresponding path program 1 times [2023-11-28 23:51:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899536021] [2023-11-28 23:51:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 23:51:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899536021] [2023-11-28 23:51:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899536021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895140607] [2023-11-28 23:51:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:40,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:40,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:40,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:51:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:40,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:51:40,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:40,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895140607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:40,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-28 23:51:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656887338] [2023-11-28 23:51:40,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:51:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:51:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:40,854 INFO L87 Difference]: Start difference. First operand 380 states and 542 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:51:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:41,067 INFO L93 Difference]: Finished difference Result 760 states and 1086 transitions. [2023-11-28 23:51:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:51:41,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-28 23:51:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:41,072 INFO L225 Difference]: With dead ends: 760 [2023-11-28 23:51:41,072 INFO L226 Difference]: Without dead ends: 383 [2023-11-28 23:51:41,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:41,075 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 0 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:41,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2038 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:51:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-28 23:51:41,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-11-28 23:51:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 318 states have (on average 1.4748427672955975) internal successors, (469), 332 states have internal predecessors, (469), 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) [2023-11-28 23:51:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 545 transitions. [2023-11-28 23:51:41,101 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 545 transitions. Word has length 47 [2023-11-28 23:51:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:41,101 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 545 transitions. [2023-11-28 23:51:41,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:51:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 545 transitions. [2023-11-28 23:51:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-28 23:51:41,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:41,104 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:41,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:51:41,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:41,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:41,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1551480797, now seen corresponding path program 2 times [2023-11-28 23:51:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:41,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961599379] [2023-11-28 23:51:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:51:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:51:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:41,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961599379] [2023-11-28 23:51:41,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961599379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:41,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:41,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664451383] [2023-11-28 23:51:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:41,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:51:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:51:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:51:41,679 INFO L87 Difference]: Start difference. First operand 383 states and 545 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-28 23:51:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:42,447 INFO L93 Difference]: Finished difference Result 744 states and 1058 transitions. [2023-11-28 23:51:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:51:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 50 [2023-11-28 23:51:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:42,451 INFO L225 Difference]: With dead ends: 744 [2023-11-28 23:51:42,451 INFO L226 Difference]: Without dead ends: 383 [2023-11-28 23:51:42,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:42,454 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:42,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1864 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:51:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-28 23:51:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-11-28 23:51:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 318 states have (on average 1.471698113207547) internal successors, (468), 332 states have internal predecessors, (468), 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) [2023-11-28 23:51:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 544 transitions. [2023-11-28 23:51:42,476 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 544 transitions. Word has length 50 [2023-11-28 23:51:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:42,477 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 544 transitions. [2023-11-28 23:51:42,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-28 23:51:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 544 transitions. [2023-11-28 23:51:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-28 23:51:42,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:42,480 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:51:42,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:42,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 831151806, now seen corresponding path program 1 times [2023-11-28 23:51:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:42,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429005147] [2023-11-28 23:51:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:51:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:51:42,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429005147] [2023-11-28 23:51:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429005147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143780528] [2023-11-28 23:51:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:42,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:51:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:51:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:51:42,842 INFO L87 Difference]: Start difference. First operand 383 states and 544 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-28 23:51:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:43,721 INFO L93 Difference]: Finished difference Result 765 states and 1092 transitions. [2023-11-28 23:51:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:51:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 51 [2023-11-28 23:51:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:43,727 INFO L225 Difference]: With dead ends: 765 [2023-11-28 23:51:43,727 INFO L226 Difference]: Without dead ends: 406 [2023-11-28 23:51:43,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:43,730 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 18 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:43,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1836 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:51:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-28 23:51:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 399. [2023-11-28 23:51:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 334 states have (on average 1.4760479041916168) internal successors, (493), 348 states have internal predecessors, (493), 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) [2023-11-28 23:51:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 569 transitions. [2023-11-28 23:51:43,751 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 569 transitions. Word has length 51 [2023-11-28 23:51:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:43,751 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 569 transitions. [2023-11-28 23:51:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-28 23:51:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 569 transitions. [2023-11-28 23:51:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-28 23:51:43,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:43,754 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:51:43,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:43,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 987465916, now seen corresponding path program 1 times [2023-11-28 23:51:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603390943] [2023-11-28 23:51:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:51:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603390943] [2023-11-28 23:51:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603390943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127237314] [2023-11-28 23:51:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:44,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:44,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:51:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:44,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:51:44,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:44,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:44,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127237314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:44,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-11-28 23:51:44,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712503160] [2023-11-28 23:51:44,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:44,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:51:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:51:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:44,526 INFO L87 Difference]: Start difference. First operand 399 states and 569 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:51:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:44,780 INFO L93 Difference]: Finished difference Result 798 states and 1143 transitions. [2023-11-28 23:51:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:51:44,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2023-11-28 23:51:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:44,784 INFO L225 Difference]: With dead ends: 798 [2023-11-28 23:51:44,784 INFO L226 Difference]: Without dead ends: 405 [2023-11-28 23:51:44,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:44,786 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:44,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2542 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:51:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-28 23:51:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2023-11-28 23:51:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 340 states have (on average 1.4676470588235293) internal successors, (499), 354 states have internal predecessors, (499), 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) [2023-11-28 23:51:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 575 transitions. [2023-11-28 23:51:44,801 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 575 transitions. Word has length 51 [2023-11-28 23:51:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:44,801 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 575 transitions. [2023-11-28 23:51:44,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:51:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 575 transitions. [2023-11-28 23:51:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:51:44,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:44,803 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:44,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:51:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:45,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:45,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1286284164, now seen corresponding path program 2 times [2023-11-28 23:51:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314679258] [2023-11-28 23:51:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:45,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314679258] [2023-11-28 23:51:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314679258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:45,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:45,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:51:45,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738685460] [2023-11-28 23:51:45,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:45,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:45,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:45,709 INFO L87 Difference]: Start difference. First operand 405 states and 575 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-28 23:51:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:46,097 INFO L93 Difference]: Finished difference Result 795 states and 1133 transitions. [2023-11-28 23:51:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:51:46,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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 57 [2023-11-28 23:51:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:46,100 INFO L225 Difference]: With dead ends: 795 [2023-11-28 23:51:46,101 INFO L226 Difference]: Without dead ends: 408 [2023-11-28 23:51:46,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:46,103 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 126 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:46,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2362 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:51:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-28 23:51:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2023-11-28 23:51:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 341 states have (on average 1.466275659824047) internal successors, (500), 355 states have internal predecessors, (500), 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) [2023-11-28 23:51:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 576 transitions. [2023-11-28 23:51:46,122 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 576 transitions. Word has length 57 [2023-11-28 23:51:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:46,122 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 576 transitions. [2023-11-28 23:51:46,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-28 23:51:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 576 transitions. [2023-11-28 23:51:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-28 23:51:46,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:46,124 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:46,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:51:46,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:46,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash 559512038, now seen corresponding path program 1 times [2023-11-28 23:51:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350804160] [2023-11-28 23:51:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350804160] [2023-11-28 23:51:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350804160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:46,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:51:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448145781] [2023-11-28 23:51:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:46,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:51:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:51:46,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:51:46,360 INFO L87 Difference]: Start difference. First operand 406 states and 576 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-28 23:51:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:46,498 INFO L93 Difference]: Finished difference Result 797 states and 1136 transitions. [2023-11-28 23:51:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:51:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 60 [2023-11-28 23:51:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:46,502 INFO L225 Difference]: With dead ends: 797 [2023-11-28 23:51:46,502 INFO L226 Difference]: Without dead ends: 407 [2023-11-28 23:51:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:51:46,504 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:46,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1018 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:51:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-28 23:51:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2023-11-28 23:51:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 342 states have (on average 1.4649122807017543) internal successors, (501), 356 states have internal predecessors, (501), 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) [2023-11-28 23:51:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 577 transitions. [2023-11-28 23:51:46,522 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 577 transitions. Word has length 60 [2023-11-28 23:51:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:46,523 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 577 transitions. [2023-11-28 23:51:46,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-28 23:51:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 577 transitions. [2023-11-28 23:51:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-28 23:51:46,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:46,525 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:51:46,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:46,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash 477092071, now seen corresponding path program 1 times [2023-11-28 23:51:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548641144] [2023-11-28 23:51:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:46,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548641144] [2023-11-28 23:51:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548641144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669417515] [2023-11-28 23:51:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:46,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:46,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:51:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:47,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:51:47,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:47,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669417515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:47,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:47,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-28 23:51:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265079415] [2023-11-28 23:51:47,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:51:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:51:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:47,306 INFO L87 Difference]: Start difference. First operand 407 states and 577 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2023-11-28 23:51:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:47,557 INFO L93 Difference]: Finished difference Result 801 states and 1142 transitions. [2023-11-28 23:51:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:51:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 61 [2023-11-28 23:51:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:47,561 INFO L225 Difference]: With dead ends: 801 [2023-11-28 23:51:47,561 INFO L226 Difference]: Without dead ends: 410 [2023-11-28 23:51:47,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:47,564 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:47,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2034 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:51:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-28 23:51:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-11-28 23:51:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 345 states have (on average 1.4608695652173913) internal successors, (504), 359 states have internal predecessors, (504), 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) [2023-11-28 23:51:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 580 transitions. [2023-11-28 23:51:47,586 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 580 transitions. Word has length 61 [2023-11-28 23:51:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:47,587 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 580 transitions. [2023-11-28 23:51:47,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2023-11-28 23:51:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 580 transitions. [2023-11-28 23:51:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-28 23:51:47,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:47,589 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:47,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:51:47,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:47,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:47,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1668919846, now seen corresponding path program 2 times [2023-11-28 23:51:47,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:47,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640831123] [2023-11-28 23:51:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:47,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 23:51:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640831123] [2023-11-28 23:51:48,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640831123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861920129] [2023-11-28 23:51:48,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:51:48,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:48,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:48,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:51:48,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:51:48,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:51:48,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-28 23:51:48,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:48,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-11-28 23:51:48,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-28 23:51:48,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:51:48,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:51:48,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-28 23:51:48,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-28 23:51:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-28 23:51:48,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:51:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861920129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:51:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-28 23:51:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408808596] [2023-11-28 23:51:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:51:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:51:48,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:48,945 INFO L87 Difference]: Start difference. First operand 410 states and 580 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2023-11-28 23:51:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:50,154 INFO L93 Difference]: Finished difference Result 581 states and 836 transitions. [2023-11-28 23:51:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:51:50,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 64 [2023-11-28 23:51:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:50,159 INFO L225 Difference]: With dead ends: 581 [2023-11-28 23:51:50,159 INFO L226 Difference]: Without dead ends: 565 [2023-11-28 23:51:50,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:51:50,160 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 437 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:50,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 3082 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 23:51:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-28 23:51:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 525. [2023-11-28 23:51:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 452 states have (on average 1.4845132743362832) internal successors, (671), 468 states have internal predecessors, (671), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 23:51:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 761 transitions. [2023-11-28 23:51:50,188 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 761 transitions. Word has length 64 [2023-11-28 23:51:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:50,188 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 761 transitions. [2023-11-28 23:51:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2023-11-28 23:51:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 761 transitions. [2023-11-28 23:51:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:51:50,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:50,190 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:50,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:51:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:50,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:50,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1493945153, now seen corresponding path program 1 times [2023-11-28 23:51:50,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:50,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182363626] [2023-11-28 23:51:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-28 23:51:50,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:50,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182363626] [2023-11-28 23:51:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182363626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:50,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:51:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269534984] [2023-11-28 23:51:50,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:50,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:51:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:51:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:50,881 INFO L87 Difference]: Start difference. First operand 525 states and 761 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-28 23:51:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:51,463 INFO L93 Difference]: Finished difference Result 1162 states and 1713 transitions. [2023-11-28 23:51:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:51:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 68 [2023-11-28 23:51:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:51,468 INFO L225 Difference]: With dead ends: 1162 [2023-11-28 23:51:51,468 INFO L226 Difference]: Without dead ends: 672 [2023-11-28 23:51:51,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:51:51,470 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 283 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:51,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 3650 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:51:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-28 23:51:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 524. [2023-11-28 23:51:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 451 states have (on average 1.483370288248337) internal successors, (669), 467 states have internal predecessors, (669), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 23:51:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 759 transitions. [2023-11-28 23:51:51,492 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 759 transitions. Word has length 68 [2023-11-28 23:51:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:51,492 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 759 transitions. [2023-11-28 23:51:51,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-28 23:51:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 759 transitions. [2023-11-28 23:51:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:51:51,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:51,494 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:51:51,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:51,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1283083644, now seen corresponding path program 1 times [2023-11-28 23:51:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704123428] [2023-11-28 23:51:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:51:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-28 23:51:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704123428] [2023-11-28 23:51:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704123428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922729206] [2023-11-28 23:51:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:51,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:51,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:51:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:52,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:51:52,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-28 23:51:52,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-28 23:51:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922729206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:52,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-28 23:51:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110218675] [2023-11-28 23:51:52,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:51:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:51:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:52,473 INFO L87 Difference]: Start difference. First operand 524 states and 759 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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) [2023-11-28 23:51:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:52,726 INFO L93 Difference]: Finished difference Result 1038 states and 1512 transitions. [2023-11-28 23:51:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:51:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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 69 [2023-11-28 23:51:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:52,730 INFO L225 Difference]: With dead ends: 1038 [2023-11-28 23:51:52,730 INFO L226 Difference]: Without dead ends: 530 [2023-11-28 23:51:52,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:52,732 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 0 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:52,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2026 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:51:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-11-28 23:51:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-11-28 23:51:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 457 states have (on average 1.4770240700218817) internal successors, (675), 473 states have internal predecessors, (675), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 23:51:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 765 transitions. [2023-11-28 23:51:52,751 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 765 transitions. Word has length 69 [2023-11-28 23:51:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:52,751 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 765 transitions. [2023-11-28 23:51:52,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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) [2023-11-28 23:51:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 765 transitions. [2023-11-28 23:51:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 23:51:52,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:52,753 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:52,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:51:52,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:52,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-28 23:51:52,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:52,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1666272996, now seen corresponding path program 2 times [2023-11-28 23:51:52,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:52,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542604318] [2023-11-28 23:51:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:52,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:52:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-28 23:52:00,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542604318] [2023-11-28 23:52:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542604318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564358610] [2023-11-28 23:52:00,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:00,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:00,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:00,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63c23c81-bcf1-4a9a-a240-f97599a7719d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:52:01,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:52:01,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:01,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-28 23:52:01,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:01,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-28 23:52:01,623 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-28 23:52:01,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-28 23:52:01,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:52:01,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 75 [2023-11-28 23:52:01,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:52:01,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2023-11-28 23:52:01,739 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:01,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 79 [2023-11-28 23:52:01,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:52:01,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:52:01,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:01,780 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-11-28 23:52:01,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2023-11-28 23:52:01,970 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:01,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:01,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,052 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,134 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,212 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,298 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,378 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,456 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,529 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,603 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-28 23:52:02,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-28 23:52:02,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-28 23:52:02,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 20 [2023-11-28 23:52:02,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-11-28 23:52:03,282 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-11-28 23:52:03,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 16 [2023-11-28 23:52:03,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:03,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-28 23:52:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-28 23:52:03,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:25,935 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-11-28 23:53:25,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51201 treesize of output 14398