./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2 --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 5ad15ea2ee4e38087fdbbd25111673bb935102e85f8e91f44e32009dacc41114 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:38,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:38,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:30:38,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:38,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:38,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:38,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:38,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:38,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:38,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:38,482 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:38,483 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:38,484 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:38,484 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:38,485 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:38,485 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:38,485 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:38,486 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:38,486 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:38,486 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:38,491 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:38,491 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:38,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:38,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:38,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:38,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:38,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:38,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:38,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:38,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:38,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:38,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:38,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:38,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:38,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:38,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:38,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:38,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:38,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:38,498 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:38,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:38,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:38,503 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:38,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:38,504 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_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ad15ea2ee4e38087fdbbd25111673bb935102e85f8e91f44e32009dacc41114 [2024-11-02 12:30:38,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:38,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:38,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:38,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:38,826 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:38,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:30:41,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:41,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:41,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2024-11-02 12:30:41,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/data/9fc173627/e54f0df9cd834242bb73861479492af1/FLAG1d719de2e [2024-11-02 12:30:41,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/data/9fc173627/e54f0df9cd834242bb73861479492af1 [2024-11-02 12:30:41,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:41,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:41,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:41,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:41,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:41,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:41" (1/1) ... [2024-11-02 12:30:41,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ef94a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:41, skipping insertion in model container [2024-11-02 12:30:41,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:41" (1/1) ... [2024-11-02 12:30:41,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:42,759 WARN L251 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_0162c042-fbae-4a50-b5ad-175d36566b48/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i[161556,161569] [2024-11-02 12:30:43,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:43,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:43,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [5489] [2024-11-02 12:30:43,351 WARN L251 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_0162c042-fbae-4a50-b5ad-175d36566b48/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i[161556,161569] [2024-11-02 12:30:43,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:43,494 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:43,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43 WrapperNode [2024-11-02 12:30:43,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:43,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:43,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:43,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:43,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,713 INFO L138 Inliner]: procedures = 125, calls = 382, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 1185 [2024-11-02 12:30:43,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:43,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:43,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:43,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:43,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:43,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:43,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:43,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:43,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:43,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:43,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0162c042-fbae-4a50-b5ad-175d36566b48/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:30:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:30:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:30:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:30:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:30:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:30:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-11-02 12:30:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-11-02 12:30:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2024-11-02 12:30:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2024-11-02 12:30:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2024-11-02 12:30:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2024-11-02 12:30:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2024-11-02 12:30:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2024-11-02 12:30:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:30:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:30:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2024-11-02 12:30:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2024-11-02 12:30:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:30:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:30:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:30:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2024-11-02 12:30:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2024-11-02 12:30:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:30:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:30:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2024-11-02 12:30:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2024-11-02 12:30:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:30:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:30:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:30:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:30:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2024-11-02 12:30:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2024-11-02 12:30:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:30:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2024-11-02 12:30:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2024-11-02 12:30:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2024-11-02 12:30:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2024-11-02 12:30:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:30:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:30:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:30:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2024-11-02 12:30:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2024-11-02 12:30:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2024-11-02 12:30:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2024-11-02 12:30:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:30:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:30:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2024-11-02 12:30:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2024-11-02 12:30:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-02 12:30:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-02 12:30:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:30:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:30:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:30:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2024-11-02 12:30:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2024-11-02 12:30:44,382 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:44,385 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:44,487 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:30:48,237 INFO L? ?]: Removed 551 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:48,238 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:48,714 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:48,714 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:30:48,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:48 BoogieIcfgContainer [2024-11-02 12:30:48,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:48,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:48,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:48,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:48,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:41" (1/3) ... [2024-11-02 12:30:48,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28868fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:48, skipping insertion in model container [2024-11-02 12:30:48,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (2/3) ... [2024-11-02 12:30:48,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28868fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:48, skipping insertion in model container [2024-11-02 12:30:48,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:48" (3/3) ... [2024-11-02 12:30:48,731 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2024-11-02 12:30:48,751 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:48,751 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:30:48,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:48,848 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;@5b5ad57a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:48,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:30:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 161 states have internal predecessors, (220), 51 states have call successors, (51), 22 states have call predecessors, (51), 21 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 12:30:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:30:48,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:48,866 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:48,867 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:48,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1893342467, now seen corresponding path program 1 times [2024-11-02 12:30:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759990032] [2024-11-02 12:30:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:48,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-02 12:30:50,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759990032] [2024-11-02 12:30:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759990032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:50,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318736597] [2024-11-02 12:30:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:50,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:50,248 INFO L87 Difference]: Start difference. First operand has 225 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 161 states have internal predecessors, (220), 51 states have call successors, (51), 22 states have call predecessors, (51), 21 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:30:52,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:30:54,303 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 [] [2024-11-02 12:30:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:55,249 INFO L93 Difference]: Finished difference Result 635 states and 911 transitions. [2024-11-02 12:30:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2024-11-02 12:30:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:55,275 INFO L225 Difference]: With dead ends: 635 [2024-11-02 12:30:55,275 INFO L226 Difference]: Without dead ends: 410 [2024-11-02 12:30:55,280 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 [2024-11-02 12:30:55,284 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 276 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:55,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 520 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2024-11-02 12:30:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-02 12:30:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-11-02 12:30:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 284 states have (on average 1.4119718309859155) internal successors, (401), 292 states have internal predecessors, (401), 86 states have call successors, (86), 40 states have call predecessors, (86), 39 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-02 12:30:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2024-11-02 12:30:55,380 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 33 [2024-11-02 12:30:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:55,381 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2024-11-02 12:30:55,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:30:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2024-11-02 12:30:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:30:55,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:55,384 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:55,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:55,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:55,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash 862207900, now seen corresponding path program 1 times [2024-11-02 12:30:55,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:55,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833772840] [2024-11-02 12:30:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:30:56,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:56,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833772840] [2024-11-02 12:30:56,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833772840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:56,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:56,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:56,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006412922] [2024-11-02 12:30:56,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:56,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:56,238 INFO L87 Difference]: Start difference. First operand 410 states and 572 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:30:58,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:00,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:01,285 INFO L93 Difference]: Finished difference Result 808 states and 1136 transitions. [2024-11-02 12:31:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-02 12:31:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:01,298 INFO L225 Difference]: With dead ends: 808 [2024-11-02 12:31:01,300 INFO L226 Difference]: Without dead ends: 803 [2024-11-02 12:31:01,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:01,303 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 282 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:01,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 741 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2024-11-02 12:31:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-02 12:31:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 797. [2024-11-02 12:31:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 552 states have (on average 1.4130434782608696) internal successors, (780), 568 states have internal predecessors, (780), 167 states have call successors, (167), 78 states have call predecessors, (167), 77 states have return successors, (174), 166 states have call predecessors, (174), 166 states have call successors, (174) [2024-11-02 12:31:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1121 transitions. [2024-11-02 12:31:01,412 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1121 transitions. Word has length 42 [2024-11-02 12:31:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:01,412 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1121 transitions. [2024-11-02 12:31:01,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:31:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1121 transitions. [2024-11-02 12:31:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-02 12:31:01,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:01,422 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:01,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:31:01,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:01,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1628532262, now seen corresponding path program 1 times [2024-11-02 12:31:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709224254] [2024-11-02 12:31:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:01,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-02 12:31:02,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709224254] [2024-11-02 12:31:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709224254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174700958] [2024-11-02 12:31:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:02,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:02,196 INFO L87 Difference]: Start difference. First operand 797 states and 1121 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-02 12:31:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:04,954 INFO L93 Difference]: Finished difference Result 1739 states and 2452 transitions. [2024-11-02 12:31:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-02 12:31:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:04,962 INFO L225 Difference]: With dead ends: 1739 [2024-11-02 12:31:04,962 INFO L226 Difference]: Without dead ends: 954 [2024-11-02 12:31:04,965 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 [2024-11-02 12:31:04,966 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 75 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:04,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 483 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-02 12:31:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-02 12:31:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 949. [2024-11-02 12:31:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 681 states have (on average 1.4273127753303965) internal successors, (972), 697 states have internal predecessors, (972), 180 states have call successors, (180), 88 states have call predecessors, (180), 87 states have return successors, (187), 179 states have call predecessors, (187), 179 states have call successors, (187) [2024-11-02 12:31:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1339 transitions. [2024-11-02 12:31:05,028 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1339 transitions. Word has length 141 [2024-11-02 12:31:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:05,028 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1339 transitions. [2024-11-02 12:31:05,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-02 12:31:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1339 transitions. [2024-11-02 12:31:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-02 12:31:05,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:05,036 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:05,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:31:05,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:05,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 311500318, now seen corresponding path program 1 times [2024-11-02 12:31:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591466900] [2024-11-02 12:31:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-02 12:31:05,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591466900] [2024-11-02 12:31:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591466900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17979317] [2024-11-02 12:31:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:05,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:05,735 INFO L87 Difference]: Start difference. First operand 949 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-02 12:31:07,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:09,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:10,368 INFO L93 Difference]: Finished difference Result 2609 states and 3678 transitions. [2024-11-02 12:31:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 159 [2024-11-02 12:31:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:10,380 INFO L225 Difference]: With dead ends: 2609 [2024-11-02 12:31:10,380 INFO L226 Difference]: Without dead ends: 1680 [2024-11-02 12:31:10,385 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 [2024-11-02 12:31:10,389 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 260 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:10,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 528 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2024-11-02 12:31:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2024-11-02 12:31:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1675. [2024-11-02 12:31:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1193 states have (on average 1.4149203688181056) internal successors, (1688), 1225 states have internal predecessors, (1688), 320 states have call successors, (320), 162 states have call predecessors, (320), 161 states have return successors, (331), 319 states have call predecessors, (331), 319 states have call successors, (331) [2024-11-02 12:31:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2339 transitions. [2024-11-02 12:31:10,504 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2339 transitions. Word has length 159 [2024-11-02 12:31:10,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:10,505 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2339 transitions. [2024-11-02 12:31:10,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-02 12:31:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2339 transitions. [2024-11-02 12:31:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-02 12:31:10,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:10,514 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:10,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:31:10,514 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1519214012, now seen corresponding path program 1 times [2024-11-02 12:31:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:10,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233074078] [2024-11-02 12:31:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-02 12:31:11,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233074078] [2024-11-02 12:31:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233074078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:11,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:11,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041814908] [2024-11-02 12:31:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:11,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:11,276 INFO L87 Difference]: Start difference. First operand 1675 states and 2339 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-02 12:31:13,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:15,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:15,795 INFO L93 Difference]: Finished difference Result 2519 states and 3544 transitions. [2024-11-02 12:31:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:15,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2024-11-02 12:31:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:15,807 INFO L225 Difference]: With dead ends: 2519 [2024-11-02 12:31:15,807 INFO L226 Difference]: Without dead ends: 1683 [2024-11-02 12:31:15,811 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 [2024-11-02 12:31:15,812 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 2 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:15,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 498 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2024-11-02 12:31:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2024-11-02 12:31:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2024-11-02 12:31:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1201 states have (on average 1.4121565362198167) internal successors, (1696), 1233 states have internal predecessors, (1696), 320 states have call successors, (320), 162 states have call predecessors, (320), 161 states have return successors, (331), 319 states have call predecessors, (331), 319 states have call successors, (331) [2024-11-02 12:31:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2347 transitions. [2024-11-02 12:31:15,911 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2347 transitions. Word has length 159 [2024-11-02 12:31:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:15,912 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2347 transitions. [2024-11-02 12:31:15,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-02 12:31:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2347 transitions. [2024-11-02 12:31:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-02 12:31:15,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:15,917 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:15,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:31:15,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:15,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1905871419, now seen corresponding path program 1 times [2024-11-02 12:31:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:15,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191488851] [2024-11-02 12:31:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms