./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-4ed3cba-1-100_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-4ed3cba-1-100_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 46b0ad08a581b5bde0454ec418cbe0193c7ec6a3f6e007f87f30934488ee8554 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:15:41,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:15:41,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:15:41,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:15:41,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:15:41,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:15:41,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:15:41,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:15:41,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:15:41,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:15:41,255 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:15:41,255 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:15:41,256 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:15:41,258 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:15:41,258 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:15:41,259 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:15:41,259 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:15:41,260 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:15:41,260 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:15:41,261 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:15:41,261 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:15:41,262 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:15:41,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:15:41,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:15:41,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:15:41,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:15:41,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:15:41,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:15:41,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:15:41,265 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:15:41,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:15:41,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:15:41,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:15:41,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:15:41,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:15:41,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:41,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:15:41,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:15:41,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:15:41,269 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:15:41,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:15:41,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:15:41,270 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:15:41,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:15:41,271 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46b0ad08a581b5bde0454ec418cbe0193c7ec6a3f6e007f87f30934488ee8554 [2023-11-19 04:15:41,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:15:41,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:15:41,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:15:41,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:15:41,599 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:15:41,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-4ed3cba-1-100_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-11-19 04:15:44,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:15:45,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:15:45,549 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-4ed3cba-1-100_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-11-19 04:15:45,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/data/ccab0cdf9/6d618ee6c95d43218228a38bd12d38dd/FLAGc7bc832a9 [2023-11-19 04:15:45,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/data/ccab0cdf9/6d618ee6c95d43218228a38bd12d38dd [2023-11-19 04:15:45,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:15:45,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:15:45,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:45,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:15:45,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:15:45,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:45" (1/1) ... [2023-11-19 04:15:45,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108ef9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:45, skipping insertion in model container [2023-11-19 04:15:45,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:45" (1/1) ... [2023-11-19 04:15:45,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:15:46,221 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3504] [2023-11-19 04:15:46,223 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3506-3507] [2023-11-19 04:15:46,223 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3508-3510] [2023-11-19 04:15:46,224 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3511-3512] [2023-11-19 04:15:46,226 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3513] [2023-11-19 04:15:46,228 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3519-3520] [2023-11-19 04:15:46,229 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3521] [2023-11-19 04:15:46,229 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3524] [2023-11-19 04:15:46,252 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name lookup at C: *(*lookup)(struct tty_driver___0 *driver , struct inode___0 *inode , int idx ) [3838-3839] [2023-11-19 04:15:46,253 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name install at C: (*install)(struct tty_driver___0 *driver , struct tty_struct___0 *tty ) [3840] [2023-11-19 04:15:46,255 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name remove at C: (*remove)(struct tty_driver___0 *driver , struct tty_struct___0 *tty ) [3841] [2023-11-19 04:15:46,262 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_init at C: (*poll_init)(struct tty_driver___0 *driver , int line , char *options ) [3872] [2023-11-19 04:15:46,262 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_get_char at C: (*poll_get_char)(struct tty_driver___0 *driver , int line ) [3873] [2023-11-19 04:15:46,263 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_put_char at C: (*poll_put_char)(struct tty_driver___0 *driver , int line , char ch ) [3874] [2023-11-19 04:15:46,265 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3934] [2023-11-19 04:15:46,267 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3935] [2023-11-19 04:15:46,267 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3936] [2023-11-19 04:15:46,268 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3937] [2023-11-19 04:15:46,268 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3938] [2023-11-19 04:15:46,269 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3939] [2023-11-19 04:15:46,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:46,910 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:15:47,024 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3504] [2023-11-19 04:15:47,025 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3506-3507] [2023-11-19 04:15:47,025 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3508-3510] [2023-11-19 04:15:47,025 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3511-3512] [2023-11-19 04:15:47,026 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3513] [2023-11-19 04:15:47,027 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3519-3520] [2023-11-19 04:15:47,027 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3521] [2023-11-19 04:15:47,028 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3524] [2023-11-19 04:15:47,037 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name lookup at C: *(*lookup)(struct tty_driver___0 *driver , struct inode___0 *inode , int idx ) [3838-3839] [2023-11-19 04:15:47,038 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name install at C: (*install)(struct tty_driver___0 *driver , struct tty_struct___0 *tty ) [3840] [2023-11-19 04:15:47,039 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name remove at C: (*remove)(struct tty_driver___0 *driver , struct tty_struct___0 *tty ) [3841] [2023-11-19 04:15:47,040 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_init at C: (*poll_init)(struct tty_driver___0 *driver , int line , char *options ) [3872] [2023-11-19 04:15:47,041 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_get_char at C: (*poll_get_char)(struct tty_driver___0 *driver , int line ) [3873] [2023-11-19 04:15:47,041 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name poll_put_char at C: (*poll_put_char)(struct tty_driver___0 *driver , int line , char ch ) [3874] [2023-11-19 04:15:47,042 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3934] [2023-11-19 04:15:47,043 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3935] [2023-11-19 04:15:47,043 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3936] [2023-11-19 04:15:47,043 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3937] [2023-11-19 04:15:47,043 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3938] [2023-11-19 04:15:47,044 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3939] [2023-11-19 04:15:47,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:47,266 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:15:47,274 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:15:47,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47 WrapperNode [2023-11-19 04:15:47,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:47,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:47,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:15:47,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:15:47,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,550 INFO L138 Inliner]: procedures = 98, calls = 1035, calls flagged for inlining = 46, calls inlined = 44, statements flattened = 1969 [2023-11-19 04:15:47,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:47,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:15:47,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:15:47,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:15:47,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:15:47,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:15:47,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:15:47,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:15:47,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (1/1) ... [2023-11-19 04:15:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:47,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:15:47,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:15:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2023-11-19 04:15:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2023-11-19 04:15:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:15:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:15:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:15:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-19 04:15:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-19 04:15:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-19 04:15:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-19 04:15:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:15:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:15:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:15:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:15:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2023-11-19 04:15:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2023-11-19 04:15:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:15:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:15:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-19 04:15:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-19 04:15:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:15:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:15:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2023-11-19 04:15:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2023-11-19 04:15:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:15:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:15:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:15:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-19 04:15:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-19 04:15:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-19 04:15:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:15:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:15:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:15:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:15:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-19 04:15:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-19 04:15:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2023-11-19 04:15:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2023-11-19 04:15:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:15:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:15:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-19 04:15:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-19 04:15:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:15:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:15:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:15:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:15:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-19 04:15:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-19 04:15:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2023-11-19 04:15:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2023-11-19 04:15:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2023-11-19 04:15:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2023-11-19 04:15:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:15:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2023-11-19 04:15:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2023-11-19 04:15:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:15:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:15:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2023-11-19 04:15:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2023-11-19 04:15:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:15:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:15:48,262 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:15:48,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:15:48,479 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:15:48,590 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-19 04:15:50,853 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:15:51,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:15:51,526 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:15:51,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:51 BoogieIcfgContainer [2023-11-19 04:15:51,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:15:51,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:15:51,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:15:51,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:15:51,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:15:45" (1/3) ... [2023-11-19 04:15:51,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:51, skipping insertion in model container [2023-11-19 04:15:51,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:47" (2/3) ... [2023-11-19 04:15:51,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:51, skipping insertion in model container [2023-11-19 04:15:51,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:51" (3/3) ... [2023-11-19 04:15:51,545 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-4ed3cba-1-100_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2023-11-19 04:15:51,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:15:51,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 04:15:51,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:15:51,637 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@309848fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:15:51,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 04:15:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 253 states have internal predecessors, (348), 74 states have call successors, (74), 24 states have call predecessors, (74), 22 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 04:15:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:15:51,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:51,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:15:51,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:51,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1200181759, now seen corresponding path program 1 times [2023-11-19 04:15:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:51,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800600905] [2023-11-19 04:15:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:15:52,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800600905] [2023-11-19 04:15:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800600905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:52,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:52,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855679138] [2023-11-19 04:15:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:52,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:52,580 INFO L87 Difference]: Start difference. First operand has 342 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 253 states have internal predecessors, (348), 74 states have call successors, (74), 24 states have call predecessors, (74), 22 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 04:15:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:52,928 INFO L93 Difference]: Finished difference Result 893 states and 1297 transitions. [2023-11-19 04:15:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 46 [2023-11-19 04:15:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:52,947 INFO L225 Difference]: With dead ends: 893 [2023-11-19 04:15:52,948 INFO L226 Difference]: Without dead ends: 550 [2023-11-19 04:15:52,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:52,957 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 395 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:52,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 882 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-19 04:15:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2023-11-19 04:15:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 385 states have (on average 1.4623376623376623) internal successors, (563), 398 states have internal predecessors, (563), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-19 04:15:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 795 transitions. [2023-11-19 04:15:53,060 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 795 transitions. Word has length 46 [2023-11-19 04:15:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:53,061 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 795 transitions. [2023-11-19 04:15:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 04:15:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 795 transitions. [2023-11-19 04:15:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:15:53,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:53,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:15:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:15:53,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:53,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1803989636, now seen corresponding path program 1 times [2023-11-19 04:15:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047871625] [2023-11-19 04:15:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:15:53,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047871625] [2023-11-19 04:15:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047871625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:53,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13604213] [2023-11-19 04:15:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:53,355 INFO L87 Difference]: Start difference. First operand 546 states and 795 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 04:15:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:53,768 INFO L93 Difference]: Finished difference Result 1170 states and 1696 transitions. [2023-11-19 04:15:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2023-11-19 04:15:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:53,777 INFO L225 Difference]: With dead ends: 1170 [2023-11-19 04:15:53,778 INFO L226 Difference]: Without dead ends: 642 [2023-11-19 04:15:53,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:53,791 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 111 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:53,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 680 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-19 04:15:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 636. [2023-11-19 04:15:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 461 states have (on average 1.4685466377440346) internal successors, (677), 474 states have internal predecessors, (677), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-11-19 04:15:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 923 transitions. [2023-11-19 04:15:53,870 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 923 transitions. Word has length 50 [2023-11-19 04:15:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:53,871 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 923 transitions. [2023-11-19 04:15:53,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 04:15:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 923 transitions. [2023-11-19 04:15:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 04:15:53,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:53,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:15:53,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:53,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2097026791, now seen corresponding path program 1 times [2023-11-19 04:15:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:53,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360456237] [2023-11-19 04:15:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:15:54,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360456237] [2023-11-19 04:15:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360456237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:54,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:15:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112845890] [2023-11-19 04:15:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:54,519 INFO L87 Difference]: Start difference. First operand 636 states and 923 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:15:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:55,011 INFO L93 Difference]: Finished difference Result 1722 states and 2582 transitions. [2023-11-19 04:15:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:15:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2023-11-19 04:15:55,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:55,024 INFO L225 Difference]: With dead ends: 1722 [2023-11-19 04:15:55,024 INFO L226 Difference]: Without dead ends: 1118 [2023-11-19 04:15:55,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:55,034 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 743 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:55,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1069 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:15:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-11-19 04:15:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 624. [2023-11-19 04:15:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 451 states have (on average 1.4678492239467849) internal successors, (662), 465 states have internal predecessors, (662), 122 states have call successors, (122), 41 states have call predecessors, (122), 41 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 04:15:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 906 transitions. [2023-11-19 04:15:55,141 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 906 transitions. Word has length 64 [2023-11-19 04:15:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 906 transitions. [2023-11-19 04:15:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:15:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 906 transitions. [2023-11-19 04:15:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 04:15:55,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:55,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:55,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:15:55,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:55,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash 66429923, now seen corresponding path program 1 times [2023-11-19 04:15:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:55,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150653776] [2023-11-19 04:15:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:55,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:15:55,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150653776] [2023-11-19 04:15:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150653776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:55,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549814848] [2023-11-19 04:15:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:55,710 INFO L87 Difference]: Start difference. First operand 624 states and 906 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:15:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:56,085 INFO L93 Difference]: Finished difference Result 1388 states and 2050 transitions. [2023-11-19 04:15:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:56,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2023-11-19 04:15:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:56,093 INFO L225 Difference]: With dead ends: 1388 [2023-11-19 04:15:56,098 INFO L226 Difference]: Without dead ends: 796 [2023-11-19 04:15:56,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:56,102 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 276 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:56,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 579 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-11-19 04:15:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 767. [2023-11-19 04:15:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 587 states have (on average 1.4480408858603067) internal successors, (850), 601 states have internal predecessors, (850), 124 states have call successors, (124), 46 states have call predecessors, (124), 46 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 04:15:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1098 transitions. [2023-11-19 04:15:56,188 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1098 transitions. Word has length 79 [2023-11-19 04:15:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:56,188 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1098 transitions. [2023-11-19 04:15:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:15:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1098 transitions. [2023-11-19 04:15:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 04:15:56,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:56,191 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:56,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:15:56,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:56,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1777183591, now seen corresponding path program 1 times [2023-11-19 04:15:56,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:56,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251046914] [2023-11-19 04:15:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:56,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 04:15:56,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251046914] [2023-11-19 04:15:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251046914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:56,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:56,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:56,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770188922] [2023-11-19 04:15:56,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:56,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:56,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:56,530 INFO L87 Difference]: Start difference. First operand 767 states and 1098 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:15:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:56,818 INFO L93 Difference]: Finished difference Result 1194 states and 1679 transitions. [2023-11-19 04:15:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2023-11-19 04:15:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:56,827 INFO L225 Difference]: With dead ends: 1194 [2023-11-19 04:15:56,827 INFO L226 Difference]: Without dead ends: 1186 [2023-11-19 04:15:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:56,829 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 283 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:56,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 728 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-11-19 04:15:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2023-11-19 04:15:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 918 states have (on average 1.408496732026144) internal successors, (1293), 937 states have internal predecessors, (1293), 188 states have call successors, (188), 70 states have call predecessors, (188), 70 states have return successors, (188), 186 states have call predecessors, (188), 188 states have call successors, (188) [2023-11-19 04:15:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1669 transitions. [2023-11-19 04:15:56,905 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1669 transitions. Word has length 82 [2023-11-19 04:15:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1669 transitions. [2023-11-19 04:15:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:15:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1669 transitions. [2023-11-19 04:15:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 04:15:56,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:56,908 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:15:56,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1504902777, now seen corresponding path program 1 times [2023-11-19 04:15:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234860423] [2023-11-19 04:15:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-19 04:15:57,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234860423] [2023-11-19 04:15:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234860423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516059930] [2023-11-19 04:15:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:57,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:57,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:57,303 INFO L87 Difference]: Start difference. First operand 1186 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 04:15:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:57,665 INFO L93 Difference]: Finished difference Result 2659 states and 3771 transitions. [2023-11-19 04:15:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:57,666 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), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 93 [2023-11-19 04:15:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:57,677 INFO L225 Difference]: With dead ends: 2659 [2023-11-19 04:15:57,677 INFO L226 Difference]: Without dead ends: 1530 [2023-11-19 04:15:57,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:57,682 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 370 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:57,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1075 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2023-11-19 04:15:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1526. [2023-11-19 04:15:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1190 states have (on average 1.4126050420168068) internal successors, (1681), 1211 states have internal predecessors, (1681), 239 states have call successors, (239), 87 states have call predecessors, (239), 87 states have return successors, (239), 237 states have call predecessors, (239), 239 states have call successors, (239) [2023-11-19 04:15:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2159 transitions. [2023-11-19 04:15:57,776 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2159 transitions. Word has length 93 [2023-11-19 04:15:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:57,778 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2159 transitions. [2023-11-19 04:15:57,778 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), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 04:15:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2159 transitions. [2023-11-19 04:15:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 04:15:57,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:57,785 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:15:57,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1165268939, now seen corresponding path program 1 times [2023-11-19 04:15:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227075489] [2023-11-19 04:15:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 04:15:58,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227075489] [2023-11-19 04:15:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227075489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894379106] [2023-11-19 04:15:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:58,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:58,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:58,169 INFO L87 Difference]: Start difference. First operand 1526 states and 2159 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:15:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:58,542 INFO L93 Difference]: Finished difference Result 2971 states and 4243 transitions. [2023-11-19 04:15:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 92 [2023-11-19 04:15:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:58,555 INFO L225 Difference]: With dead ends: 2971 [2023-11-19 04:15:58,556 INFO L226 Difference]: Without dead ends: 1886 [2023-11-19 04:15:58,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:58,562 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 371 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:58,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1095 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2023-11-19 04:15:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1882. [2023-11-19 04:15:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1472 states have (on average 1.4171195652173914) internal successors, (2086), 1495 states have internal predecessors, (2086), 292 states have call successors, (292), 108 states have call predecessors, (292), 108 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) [2023-11-19 04:15:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2670 transitions. [2023-11-19 04:15:58,685 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2670 transitions. Word has length 92 [2023-11-19 04:15:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:58,686 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 2670 transitions. [2023-11-19 04:15:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:15:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2670 transitions. [2023-11-19 04:15:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 04:15:58,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:58,689 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:15:58,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:15:58,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1202417422, now seen corresponding path program 1 times [2023-11-19 04:15:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:58,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165152425] [2023-11-19 04:15:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 04:15:59,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165152425] [2023-11-19 04:15:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165152425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691450499] [2023-11-19 04:15:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:59,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:59,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:59,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:59,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:15:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:59,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:59,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 04:16:00,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691450499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:16:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 04:16:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488051482] [2023-11-19 04:16:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:16:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:16:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:00,079 INFO L87 Difference]: Start difference. First operand 1882 states and 2670 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 04:16:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:00,924 INFO L93 Difference]: Finished difference Result 4271 states and 6085 transitions. [2023-11-19 04:16:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:16:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2023-11-19 04:16:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:00,953 INFO L225 Difference]: With dead ends: 4271 [2023-11-19 04:16:00,954 INFO L226 Difference]: Without dead ends: 4266 [2023-11-19 04:16:00,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:00,957 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 768 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:00,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1208 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:16:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2023-11-19 04:16:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3835. [2023-11-19 04:16:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3835 states, 3008 states have (on average 1.4188829787234043) internal successors, (4268), 3044 states have internal predecessors, (4268), 598 states have call successors, (598), 219 states have call predecessors, (598), 219 states have return successors, (598), 595 states have call predecessors, (598), 598 states have call successors, (598) [2023-11-19 04:16:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 5464 transitions. [2023-11-19 04:16:01,280 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 5464 transitions. Word has length 97 [2023-11-19 04:16:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:01,281 INFO L495 AbstractCegarLoop]: Abstraction has 3835 states and 5464 transitions. [2023-11-19 04:16:01,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 04:16:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 5464 transitions. [2023-11-19 04:16:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 04:16:01,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:01,299 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:01,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:16:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:16:01,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:16:01,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1379766715, now seen corresponding path program 1 times [2023-11-19 04:16:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:01,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953862507] [2023-11-19 04:16:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 04:16:01,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953862507] [2023-11-19 04:16:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953862507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:16:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278481553] [2023-11-19 04:16:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:01,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:16:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:01,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:16:01,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd81054-ff7b-45fd-ade2-d99cf2985eec/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:16:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:02,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:16:02,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 04:16:02,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:16:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 04:16:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278481553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:16:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153905783] [2023-11-19 04:16:02,792 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-11-19 04:16:02,792 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:16:02,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:16:02,805 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:16:02,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs