./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 17392b794ea5e57dd08811f1c935d7cc0fa0c1509aa84d5ecae872c99757bce0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:32:21,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:32:21,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:32:21,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:32:21,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:32:21,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:32:21,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:32:21,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:32:21,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:32:21,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:32:21,286 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:32:21,286 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:32:21,287 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:32:21,287 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:32:21,288 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:32:21,288 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:32:21,289 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:32:21,289 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:32:21,290 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:32:21,290 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:32:21,291 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:32:21,292 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:32:21,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:32:21,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:32:21,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:32:21,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:32:21,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:32:21,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:32:21,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:32:21,295 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:32:21,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:32:21,296 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:32:21,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:32:21,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:32:21,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:32:21,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:32:21,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:32:21,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:32:21,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:32:21,300 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:32:21,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:32:21,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:32:21,305 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:32:21,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:32:21,305 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_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17392b794ea5e57dd08811f1c935d7cc0fa0c1509aa84d5ecae872c99757bce0 [2024-11-09 05:32:21,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:32:21,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:32:21,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:32:21,633 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:32:21,633 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:32:21,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-09 05:32:24,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:32:24,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:32:24,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2024-11-09 05:32:24,845 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/data/06e7c00e6/16598223e1554275955e1730b4d62bd3/FLAG83c4e10ca [2024-11-09 05:32:24,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/data/06e7c00e6/16598223e1554275955e1730b4d62bd3 [2024-11-09 05:32:24,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:32:24,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:32:24,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:32:24,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:32:24,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:32:24,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:32:24" (1/1) ... [2024-11-09 05:32:24,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a1da2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:24, skipping insertion in model container [2024-11-09 05:32:24,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:32:24" (1/1) ... [2024-11-09 05:32:25,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:32:26,088 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2024-11-09 05:32:27,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:32:27,288 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:32:27,454 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2024-11-09 05:32:27,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ (" addl %1,%0\n adcl $0xffff,%0": "=r" (sum): "r" (sum << 16), "0" (sum & 4294901760U)); [5544] [2024-11-09 05:32:27,473 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (138), "i" (12UL)); [5757-5758] [2024-11-09 05:32:27,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (165), "i" (12UL)); [5790-5791] [2024-11-09 05:32:27,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (398), "i" (12UL)); [6063-6064] [2024-11-09 05:32:27,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (399), "i" (12UL)); [6071-6072] [2024-11-09 05:32:27,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (436), "i" (12UL)); [6125-6126] [2024-11-09 05:32:27,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (437), "i" (12UL)); [6133-6134] [2024-11-09 05:32:27,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (1732), "i" (12UL)); [8040-8041] [2024-11-09 05:32:27,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/7636/dscv_tempdir/dscv/ri/144_2a/drivers/net/usb/smsc95xx.o.c.prepared"), "i" (1877), "i" (12UL)); [8270-8271] [2024-11-09 05:32:27,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:32:28,021 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:32:28,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28 WrapperNode [2024-11-09 05:32:28,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:32:28,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:32:28,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:32:28,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:32:28,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,380 INFO L138 Inliner]: procedures = 211, calls = 2748, calls flagged for inlining = 96, calls inlined = 96, statements flattened = 7590 [2024-11-09 05:32:28,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:32:28,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:32:28,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:32:28,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:32:28,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:32:28,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:32:28,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:32:28,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:32:28,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (1/1) ... [2024-11-09 05:32:28,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:32:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:32:28,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:32:28,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:32:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2024-11-09 05:32:28,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2024-11-09 05:32:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2024-11-09 05:32:28,978 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2024-11-09 05:32:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 05:32:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:32:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 05:32:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 05:32:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2024-11-09 05:32:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2024-11-09 05:32:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2024-11-09 05:32:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2024-11-09 05:32:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2024-11-09 05:32:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2024-11-09 05:32:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 05:32:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 05:32:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2024-11-09 05:32:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2024-11-09 05:32:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2024-11-09 05:32:28,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2024-11-09 05:32:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ioctl [2024-11-09 05:32:28,982 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ioctl [2024-11-09 05:32:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2024-11-09 05:32:28,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2024-11-09 05:32:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2024-11-09 05:32:28,982 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2024-11-09 05:32:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-09 05:32:28,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-09 05:32:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 05:32:28,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 05:32:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_tx_fixup [2024-11-09 05:32:28,983 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_tx_fixup [2024-11-09 05:32:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 05:32:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 05:32:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:32:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:32:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2024-11-09 05:32:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2024-11-09 05:32:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_change_mtu [2024-11-09 05:32:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_change_mtu [2024-11-09 05:32:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2024-11-09 05:32:28,985 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2024-11-09 05:32:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-09 05:32:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-09 05:32:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2024-11-09 05:32:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2024-11-09 05:32:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:32:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2024-11-09 05:32:28,988 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2024-11-09 05:32:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2024-11-09 05:32:28,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2024-11-09 05:32:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-11-09 05:32:28,989 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-11-09 05:32:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:32:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-11-09 05:32:28,990 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-11-09 05:32:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 05:32:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 05:32:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2024-11-09 05:32:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2024-11-09 05:32:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2024-11-09 05:32:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2024-11-09 05:32:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2024-11-09 05:32:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2024-11-09 05:32:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:32:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2024-11-09 05:32:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2024-11-09 05:32:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2024-11-09 05:32:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2024-11-09 05:32:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2024-11-09 05:32:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2024-11-09 05:32:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2024-11-09 05:32:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2024-11-09 05:32:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-09 05:32:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-09 05:32:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-09 05:32:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-09 05:32:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-09 05:32:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-09 05:32:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-09 05:32:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-09 05:32:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-09 05:32:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-09 05:32:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-09 05:32:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-09 05:32:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2024-11-09 05:32:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2024-11-09 05:32:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 05:32:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-09 05:32:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-09 05:32:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2024-11-09 05:32:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2024-11-09 05:32:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2024-11-09 05:32:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2024-11-09 05:32:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:32:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2024-11-09 05:32:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2024-11-09 05:32:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2024-11-09 05:32:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2024-11-09 05:32:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:32:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2024-11-09 05:32:29,000 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2024-11-09 05:32:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-11-09 05:32:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-11-09 05:32:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2024-11-09 05:32:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2024-11-09 05:32:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 05:32:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 05:32:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2024-11-09 05:32:29,002 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2024-11-09 05:32:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2024-11-09 05:32:29,002 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2024-11-09 05:32:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 05:32:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 05:32:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2024-11-09 05:32:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2024-11-09 05:32:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2024-11-09 05:32:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2024-11-09 05:32:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:32:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2024-11-09 05:32:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2024-11-09 05:32:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 05:32:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 05:32:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:32:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2024-11-09 05:32:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2024-11-09 05:32:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:32:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_status [2024-11-09 05:32:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_status [2024-11-09 05:32:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-09 05:32:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-09 05:32:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:32:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2024-11-09 05:32:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2024-11-09 05:32:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2024-11-09 05:32:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2024-11-09 05:32:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2024-11-09 05:32:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2024-11-09 05:32:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2024-11-09 05:32:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2024-11-09 05:32:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2024-11-09 05:32:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2024-11-09 05:32:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_manage_power [2024-11-09 05:32:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_manage_power [2024-11-09 05:32:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_fixup [2024-11-09 05:32:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_fixup [2024-11-09 05:32:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2024-11-09 05:32:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2024-11-09 05:32:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:32:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:32:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:32:30,152 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:32:30,156 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:32:30,754 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 05:32:49,607 INFO L? ?]: Removed 2173 outVars from TransFormulas that were not future-live. [2024-11-09 05:32:49,608 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:32:54,182 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:32:54,186 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:32:54,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:32:54 BoogieIcfgContainer [2024-11-09 05:32:54,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:32:54,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:32:54,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:32:54,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:32:54,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:32:24" (1/3) ... [2024-11-09 05:32:54,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968b813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:32:54, skipping insertion in model container [2024-11-09 05:32:54,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:32:28" (2/3) ... [2024-11-09 05:32:54,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968b813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:32:54, skipping insertion in model container [2024-11-09 05:32:54,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:32:54" (3/3) ... [2024-11-09 05:32:54,202 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2024-11-09 05:32:54,227 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:32:54,229 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:32:54,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:32:54,406 INFO L333 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, 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;@7d2aca38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:32:54,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:32:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 1427 states, 933 states have (on average 1.3879957127545552) internal successors, (1295), 949 states have internal predecessors, (1295), 425 states have call successors, (425), 68 states have call predecessors, (425), 67 states have return successors, (419), 419 states have call predecessors, (419), 419 states have call successors, (419) [2024-11-09 05:32:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:32:54,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:32:54,440 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:32:54,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:32:54,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:32:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -655382943, now seen corresponding path program 1 times [2024-11-09 05:32:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:32:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840640234] [2024-11-09 05:32:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:32:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-09 05:34:09,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840640234] [2024-11-09 05:34:09,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840640234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:34:09,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:34:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:34:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2936566] [2024-11-09 05:34:09,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:34:09,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:34:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:34:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:34:09,543 INFO L87 Difference]: Start difference. First operand has 1427 states, 933 states have (on average 1.3879957127545552) internal successors, (1295), 949 states have internal predecessors, (1295), 425 states have call successors, (425), 68 states have call predecessors, (425), 67 states have return successors, (419), 419 states have call predecessors, (419), 419 states have call successors, (419) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-09 05:34:11,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:13,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:17,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:19,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:23,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:25,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:34:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:27,108 INFO L93 Difference]: Finished difference Result 4193 states and 6290 transitions. [2024-11-09 05:34:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:34:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2024-11-09 05:34:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:27,159 INFO L225 Difference]: With dead ends: 4193 [2024-11-09 05:34:27,159 INFO L226 Difference]: Without dead ends: 2761 [2024-11-09 05:34:27,178 INFO L431 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 [2024-11-09 05:34:27,182 INFO L432 NwaCegarLoop]: 1930 mSDtfsCounter, 2040 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:27,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 3843 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 425 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2024-11-09 05:34:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2024-11-09 05:34:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2758. [2024-11-09 05:34:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 1815 states have (on average 1.3768595041322313) internal successors, (2499), 1826 states have internal predecessors, (2499), 810 states have call successors, (810), 133 states have call predecessors, (810), 132 states have return successors, (804), 804 states have call predecessors, (804), 804 states have call successors, (804) [2024-11-09 05:34:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4113 transitions. [2024-11-09 05:34:27,566 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4113 transitions. Word has length 87 [2024-11-09 05:34:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:27,568 INFO L471 AbstractCegarLoop]: Abstraction has 2758 states and 4113 transitions. [2024-11-09 05:34:27,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-09 05:34:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4113 transitions. [2024-11-09 05:34:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 05:34:27,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:27,582 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:34:27,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:34:27,584 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:34:27,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 366593455, now seen corresponding path program 1 times [2024-11-09 05:34:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:27,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616602406] [2024-11-09 05:34:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-09 05:35:48,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616602406] [2024-11-09 05:35:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616602406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:48,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:48,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:35:48,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197329337] [2024-11-09 05:35:48,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:48,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:35:48,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:48,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:35:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:35:48,287 INFO L87 Difference]: Start difference. First operand 2758 states and 4113 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:35:50,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:35:54,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:35:56,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:35:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:57,643 INFO L93 Difference]: Finished difference Result 2760 states and 4114 transitions. [2024-11-09 05:35:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:35:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2024-11-09 05:35:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:57,669 INFO L225 Difference]: With dead ends: 2760 [2024-11-09 05:35:57,670 INFO L226 Difference]: Without dead ends: 2757 [2024-11-09 05:35:57,674 INFO L431 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 [2024-11-09 05:35:57,677 INFO L432 NwaCegarLoop]: 1890 mSDtfsCounter, 2059 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:57,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1890 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2024-11-09 05:35:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2024-11-09 05:35:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2757. [2024-11-09 05:35:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 1815 states have (on average 1.3763085399449035) internal successors, (2498), 1825 states have internal predecessors, (2498), 809 states have call successors, (809), 133 states have call predecessors, (809), 132 states have return successors, (804), 804 states have call predecessors, (804), 804 states have call successors, (804) [2024-11-09 05:35:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4111 transitions. [2024-11-09 05:35:57,857 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4111 transitions. Word has length 96 [2024-11-09 05:35:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:57,861 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 4111 transitions. [2024-11-09 05:35:57,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:35:57,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4111 transitions. [2024-11-09 05:35:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 05:35:57,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:57,868 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:35:57,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:35:57,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:57,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1521292725, now seen corresponding path program 1 times [2024-11-09 05:35:57,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:57,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571442214] [2024-11-09 05:35:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-09 05:37:10,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571442214] [2024-11-09 05:37:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571442214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:37:10,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426784019] [2024-11-09 05:37:10,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:10,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:10,537 INFO L87 Difference]: Start difference. First operand 2757 states and 4111 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:37:12,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:17,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:18,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:37:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:19,030 INFO L93 Difference]: Finished difference Result 2759 states and 4112 transitions. [2024-11-09 05:37:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2024-11-09 05:37:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:19,050 INFO L225 Difference]: With dead ends: 2759 [2024-11-09 05:37:19,050 INFO L226 Difference]: Without dead ends: 2756 [2024-11-09 05:37:19,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:19,054 INFO L432 NwaCegarLoop]: 1888 mSDtfsCounter, 2056 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:19,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 1888 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2024-11-09 05:37:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2024-11-09 05:37:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2024-11-09 05:37:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 1815 states have (on average 1.3757575757575757) internal successors, (2497), 1824 states have internal predecessors, (2497), 808 states have call successors, (808), 133 states have call predecessors, (808), 132 states have return successors, (804), 804 states have call predecessors, (804), 804 states have call successors, (804) [2024-11-09 05:37:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4109 transitions. [2024-11-09 05:37:19,253 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4109 transitions. Word has length 97 [2024-11-09 05:37:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:19,254 INFO L471 AbstractCegarLoop]: Abstraction has 2756 states and 4109 transitions. [2024-11-09 05:37:19,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:37:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4109 transitions. [2024-11-09 05:37:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 05:37:19,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:19,257 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:19,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:37:19,258 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:19,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 83782706, now seen corresponding path program 1 times [2024-11-09 05:37:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:19,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688658090] [2024-11-09 05:37:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:38:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:38:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-09 05:38:16,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:38:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688658090] [2024-11-09 05:38:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688658090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:38:16,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:38:16,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:38:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229676146] [2024-11-09 05:38:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:38:16,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:38:16,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:38:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:38:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:38:16,236 INFO L87 Difference]: Start difference. First operand 2756 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:38:18,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:38:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:38:23,512 INFO L93 Difference]: Finished difference Result 2758 states and 4110 transitions. [2024-11-09 05:38:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:38:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2024-11-09 05:38:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:38:23,530 INFO L225 Difference]: With dead ends: 2758 [2024-11-09 05:38:23,530 INFO L226 Difference]: Without dead ends: 2755 [2024-11-09 05:38:23,532 INFO L431 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 [2024-11-09 05:38:23,533 INFO L432 NwaCegarLoop]: 1886 mSDtfsCounter, 2053 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:38:23,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1886 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 05:38:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-09 05:38:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2755. [2024-11-09 05:38:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 1815 states have (on average 1.375206611570248) internal successors, (2496), 1823 states have internal predecessors, (2496), 807 states have call successors, (807), 133 states have call predecessors, (807), 132 states have return successors, (804), 804 states have call predecessors, (804), 804 states have call successors, (804) [2024-11-09 05:38:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 4107 transitions. [2024-11-09 05:38:23,739 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 4107 transitions. Word has length 98 [2024-11-09 05:38:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:38:23,739 INFO L471 AbstractCegarLoop]: Abstraction has 2755 states and 4107 transitions. [2024-11-09 05:38:23,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:38:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 4107 transitions. [2024-11-09 05:38:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 05:38:23,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:38:23,742 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:38:23,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:38:23,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:38:23,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:38:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1928673858, now seen corresponding path program 1 times [2024-11-09 05:38:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:38:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119653049] [2024-11-09 05:38:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:38:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-09 05:39:18,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119653049] [2024-11-09 05:39:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119653049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216106777] [2024-11-09 05:39:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:18,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:39:18,598 INFO L87 Difference]: Start difference. First operand 2755 states and 4107 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:39:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:22,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:24,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:39:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:29,990 INFO L93 Difference]: Finished difference Result 7143 states and 10600 transitions. [2024-11-09 05:39:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2024-11-09 05:39:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:30,018 INFO L225 Difference]: With dead ends: 7143 [2024-11-09 05:39:30,018 INFO L226 Difference]: Without dead ends: 4415 [2024-11-09 05:39:30,031 INFO L431 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 [2024-11-09 05:39:30,034 INFO L432 NwaCegarLoop]: 1888 mSDtfsCounter, 1253 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:30,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 3695 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 456 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2024-11-09 05:39:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2024-11-09 05:39:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4405. [2024-11-09 05:39:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 2904 states have (on average 1.3732782369146006) internal successors, (3988), 2914 states have internal predecessors, (3988), 1268 states have call successors, (1268), 233 states have call predecessors, (1268), 232 states have return successors, (1265), 1265 states have call predecessors, (1265), 1265 states have call successors, (1265) [2024-11-09 05:39:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6521 transitions. [2024-11-09 05:39:30,389 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6521 transitions. Word has length 100 [2024-11-09 05:39:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:30,390 INFO L471 AbstractCegarLoop]: Abstraction has 4405 states and 6521 transitions. [2024-11-09 05:39:30,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:39:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6521 transitions. [2024-11-09 05:39:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 05:39:30,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:30,393 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:30,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:39:30,394 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:30,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1698481618, now seen corresponding path program 1 times [2024-11-09 05:39:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340670558] [2024-11-09 05:39:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:30,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-09 05:40:26,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340670558] [2024-11-09 05:40:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340670558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:26,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:26,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:40:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581266305] [2024-11-09 05:40:26,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:26,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:40:26,452 INFO L87 Difference]: Start difference. First operand 4405 states and 6521 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:40:28,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:40:32,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:40:34,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:40:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:36,489 INFO L93 Difference]: Finished difference Result 8774 states and 12996 transitions. [2024-11-09 05:40:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 99 [2024-11-09 05:40:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:36,517 INFO L225 Difference]: With dead ends: 8774 [2024-11-09 05:40:36,518 INFO L226 Difference]: Without dead ends: 4402 [2024-11-09 05:40:36,536 INFO L431 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 [2024-11-09 05:40:36,537 INFO L432 NwaCegarLoop]: 1882 mSDtfsCounter, 2048 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:36,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 1882 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2024-11-09 05:40:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2024-11-09 05:40:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4401. [2024-11-09 05:40:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 2901 states have (on average 1.3726301275422268) internal successors, (3982), 2910 states have internal predecessors, (3982), 1267 states have call successors, (1267), 233 states have call predecessors, (1267), 232 states have return successors, (1265), 1265 states have call predecessors, (1265), 1265 states have call successors, (1265) [2024-11-09 05:40:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6514 transitions. [2024-11-09 05:40:36,912 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6514 transitions. Word has length 99 [2024-11-09 05:40:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:36,912 INFO L471 AbstractCegarLoop]: Abstraction has 4401 states and 6514 transitions. [2024-11-09 05:40:36,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:40:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6514 transitions. [2024-11-09 05:40:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 05:40:36,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:36,915 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:36,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:40:36,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:36,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1114095947, now seen corresponding path program 1 times [2024-11-09 05:40:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975381807] [2024-11-09 05:40:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-09 05:41:36,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975381807] [2024-11-09 05:41:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975381807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603711536] [2024-11-09 05:41:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:36,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:36,699 INFO L87 Difference]: Start difference. First operand 4401 states and 6514 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:41:38,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:41:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:42,847 INFO L93 Difference]: Finished difference Result 4403 states and 6515 transitions. [2024-11-09 05:41:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2024-11-09 05:41:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:42,900 INFO L225 Difference]: With dead ends: 4403 [2024-11-09 05:41:42,904 INFO L226 Difference]: Without dead ends: 4394 [2024-11-09 05:41:42,907 INFO L431 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 [2024-11-09 05:41:42,912 INFO L432 NwaCegarLoop]: 1882 mSDtfsCounter, 2045 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:42,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1882 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2024-11-09 05:41:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2024-11-09 05:41:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 4394. [2024-11-09 05:41:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 2895 states have (on average 1.3716753022452504) internal successors, (3971), 2903 states have internal predecessors, (3971), 1266 states have call successors, (1266), 233 states have call predecessors, (1266), 232 states have return successors, (1265), 1265 states have call predecessors, (1265), 1265 states have call successors, (1265) [2024-11-09 05:41:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 6502 transitions. [2024-11-09 05:41:43,407 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 6502 transitions. Word has length 100 [2024-11-09 05:41:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:43,408 INFO L471 AbstractCegarLoop]: Abstraction has 4394 states and 6502 transitions. [2024-11-09 05:41:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:41:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 6502 transitions. [2024-11-09 05:41:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 05:41:43,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:43,415 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:43,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:41:43,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:43,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash 179499396, now seen corresponding path program 1 times [2024-11-09 05:41:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:43,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792123781] [2024-11-09 05:41:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-11-09 05:42:39,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:39,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792123781] [2024-11-09 05:42:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792123781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:42:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368900571] [2024-11-09 05:42:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:39,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:39,651 INFO L87 Difference]: Start difference. First operand 4394 states and 6502 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-09 05:42:41,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:43,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:47,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:48,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:53,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:55,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:42:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:57,128 INFO L93 Difference]: Finished difference Result 11315 states and 16769 transitions. [2024-11-09 05:42:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 164 [2024-11-09 05:42:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:57,179 INFO L225 Difference]: With dead ends: 11315 [2024-11-09 05:42:57,179 INFO L226 Difference]: Without dead ends: 6954 [2024-11-09 05:42:57,198 INFO L431 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 [2024-11-09 05:42:57,199 INFO L432 NwaCegarLoop]: 3004 mSDtfsCounter, 1957 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:57,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 4759 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 591 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2024-11-09 05:42:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2024-11-09 05:42:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6950. [2024-11-09 05:42:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 4588 states have (on average 1.370095902353967) internal successors, (6286), 4602 states have internal predecessors, (6286), 1998 states have call successors, (1998), 364 states have call predecessors, (1998), 363 states have return successors, (1997), 1997 states have call predecessors, (1997), 1997 states have call successors, (1997) [2024-11-09 05:42:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 10281 transitions. [2024-11-09 05:42:57,772 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 10281 transitions. Word has length 164 [2024-11-09 05:42:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:57,772 INFO L471 AbstractCegarLoop]: Abstraction has 6950 states and 10281 transitions. [2024-11-09 05:42:57,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-09 05:42:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 10281 transitions. [2024-11-09 05:42:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-09 05:42:57,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:57,780 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:57,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:42:57,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:57,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1933877943, now seen corresponding path program 1 times [2024-11-09 05:42:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620156481] [2024-11-09 05:42:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-11-09 05:44:00,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:00,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620156481] [2024-11-09 05:44:00,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620156481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:44:00,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040601283] [2024-11-09 05:44:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:00,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:44:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:44:00,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:44:00,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:45:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:02,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 5607 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:45:02,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:45:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-09 05:45:03,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:45:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040601283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:45:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:45:03,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-09 05:45:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686769565] [2024-11-09 05:45:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:03,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:45:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:45:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:45:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:45:03,098 INFO L87 Difference]: Start difference. First operand 6950 states and 10281 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-09 05:45:05,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:07,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:09,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:13,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:15,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:16,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:19,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:23,411 INFO L93 Difference]: Finished difference Result 13884 states and 20555 transitions. [2024-11-09 05:45:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:45:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 163 [2024-11-09 05:45:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:23,441 INFO L225 Difference]: With dead ends: 13884 [2024-11-09 05:45:23,442 INFO L226 Difference]: Without dead ends: 6956 [2024-11-09 05:45:23,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:45:23,472 INFO L432 NwaCegarLoop]: 1875 mSDtfsCounter, 0 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:23,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5618 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 624 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2024-11-09 05:45:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2024-11-09 05:45:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6956. [2024-11-09 05:45:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 4594 states have (on average 1.369612538093165) internal successors, (6292), 4608 states have internal predecessors, (6292), 1998 states have call successors, (1998), 364 states have call predecessors, (1998), 363 states have return successors, (1997), 1997 states have call predecessors, (1997), 1997 states have call successors, (1997) [2024-11-09 05:45:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 10287 transitions. [2024-11-09 05:45:24,070 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 10287 transitions. Word has length 163 [2024-11-09 05:45:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:24,071 INFO L471 AbstractCegarLoop]: Abstraction has 6956 states and 10287 transitions. [2024-11-09 05:45:24,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-09 05:45:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 10287 transitions. [2024-11-09 05:45:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-09 05:45:24,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:24,078 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:45:24,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:45:24,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:45:24,279 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:24,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1647266884, now seen corresponding path program 1 times [2024-11-09 05:45:24,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:45:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656640602] [2024-11-09 05:45:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:46:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2024-11-09 05:46:33,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:46:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656640602] [2024-11-09 05:46:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656640602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:46:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426310738] [2024-11-09 05:46:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:46:33,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:46:33,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:46:33,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a22f8a3-f32c-4f7f-953a-17377448a804/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process