./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ --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 bf59f873abe32ddc2d99221f4f189da946012506d30fecc03d275d110896ac6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:48,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:48,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:07:48,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:48,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:48,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:48,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:48,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:48,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:48,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:48,933 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:48,934 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:48,934 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:48,936 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:48,936 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:48,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:48,937 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:48,938 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:48,938 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:48,939 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:48,939 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:48,940 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:48,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:48,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:48,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:48,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:48,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:48,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:48,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:48,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:48,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:48,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:48,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:48,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:48,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:48,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:48,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:48,948 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:48,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:48,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:48,949 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:48,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:48,950 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_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf59f873abe32ddc2d99221f4f189da946012506d30fecc03d275d110896ac6d [2023-11-19 05:07:49,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:49,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:49,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:49,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:49,316 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:49,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i [2023-11-19 05:07:52,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:52,994 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:52,995 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i [2023-11-19 05:07:53,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/data/b121edf5e/d524215f268f4b8a91f86bc345b6e164/FLAGf9105b3c0 [2023-11-19 05:07:53,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/data/b121edf5e/d524215f268f4b8a91f86bc345b6e164 [2023-11-19 05:07:53,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:53,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:53,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:53,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:53,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:53,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:53,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580acfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53, skipping insertion in model container [2023-11-19 05:07:53,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:53,205 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:53,807 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4786] [2023-11-19 05:07:53,808 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4787-4788] [2023-11-19 05:07:53,974 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i[144467,144480] [2023-11-19 05:07:54,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:54,704 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:54,851 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4786] [2023-11-19 05:07:54,852 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4787-4788] [2023-11-19 05:07:54,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4892] [2023-11-19 05:07:54,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4899] [2023-11-19 05:07:54,862 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i[144467,144480] [2023-11-19 05:07:54,972 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5709] [2023-11-19 05:07:54,976 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-3.16-rc1.tar.xz--X--43_2a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/11804/dscv_tempdir/dscv/ri/43_2a/drivers/ata/sata_sx4.o.c.prepared"), "i" (726), "i" (12UL)); [5738-5739] [2023-11-19 05:07:55,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:55,205 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:55,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55 WrapperNode [2023-11-19 05:07:55,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:55,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:55,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:55,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:55,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,440 INFO L138 Inliner]: procedures = 151, calls = 811, calls flagged for inlining = 86, calls inlined = 71, statements flattened = 2263 [2023-11-19 05:07:55,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:55,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:55,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:55,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:55,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:55,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:55,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:55,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:55,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (1/1) ... [2023-11-19 05:07:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:55,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:55,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure pdc_prep_lba48 [2023-11-19 05:07:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc_prep_lba48 [2023-11-19 05:07:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:07:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 05:07:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 05:07:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:07:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:07:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:07:55,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:07:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure pdc_reset_port [2023-11-19 05:07:55,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc_reset_port [2023-11-19 05:07:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:07:55,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:07:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure pdc20621_i2c_read [2023-11-19 05:07:55,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc20621_i2c_read [2023-11-19 05:07:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure pdc_pkt_footer [2023-11-19 05:07:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc_pkt_footer [2023-11-19 05:07:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:07:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:07:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure ata_port_pbar_desc [2023-11-19 05:07:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ata_port_pbar_desc [2023-11-19 05:07:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:07:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:07:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-19 05:07:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-19 05:07:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:07:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:07:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure pdc20621_dump_hdma [2023-11-19 05:07:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc20621_dump_hdma [2023-11-19 05:07:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure __pdc20621_push_hdma [2023-11-19 05:07:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __pdc20621_push_hdma [2023-11-19 05:07:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 05:07:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 05:07:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-19 05:07:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-19 05:07:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure pdc_prep_lba28 [2023-11-19 05:07:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc_prep_lba28 [2023-11-19 05:07:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2023-11-19 05:07:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2023-11-19 05:07:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:07:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:07:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:07:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:07:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:07:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 05:07:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 05:07:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 05:07:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 05:07:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure pdc20621_push_hdma [2023-11-19 05:07:55,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc20621_push_hdma [2023-11-19 05:07:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure pdc20621_ata_pkt [2023-11-19 05:07:55,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pdc20621_ata_pkt [2023-11-19 05:07:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:07:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:07:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:07:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:56,214 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:56,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:01,054 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:08:05,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:07,356 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:07,357 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:08:07,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:07 BoogieIcfgContainer [2023-11-19 05:08:07,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:07,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:07,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:07,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:07,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:53" (1/3) ... [2023-11-19 05:08:07,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6943f1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:07, skipping insertion in model container [2023-11-19 05:08:07,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:55" (2/3) ... [2023-11-19 05:08:07,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6943f1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:07, skipping insertion in model container [2023-11-19 05:08:07,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:07" (3/3) ... [2023-11-19 05:08:07,384 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--ata--sata_sx4.ko-entry_point.cil.out.i [2023-11-19 05:08:07,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:07,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:08:07,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:07,493 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b4277e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:07,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:08:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 260 states have internal predecessors, (346), 136 states have call successors, (136), 25 states have call predecessors, (136), 24 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-19 05:08:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-19 05:08:07,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:07,554 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:07,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:07,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -858648667, now seen corresponding path program 1 times [2023-11-19 05:08:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:07,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218789689] [2023-11-19 05:08:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:08,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:08,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218789689] [2023-11-19 05:08:08,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 05:08:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540884968] [2023-11-19 05:08:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:08,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:08,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:08,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:08,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:09,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-11-19 05:08:09,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540884968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787545650] [2023-11-19 05:08:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,680 INFO L87 Difference]: Start difference. First operand has 409 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 260 states have internal predecessors, (346), 136 states have call successors, (136), 25 states have call predecessors, (136), 24 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 05:08:11,908 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 [] [2023-11-19 05:08:13,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:15,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:18,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:20,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:22,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:24,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:26,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:28,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:29,451 INFO L93 Difference]: Finished difference Result 1043 states and 1558 transitions. [2023-11-19 05:08:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:29,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2023-11-19 05:08:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:29,470 INFO L225 Difference]: With dead ends: 1043 [2023-11-19 05:08:29,470 INFO L226 Difference]: Without dead ends: 634 [2023-11-19 05:08:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:29,479 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 377 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:29,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1000 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 9 Unknown, 0 Unchecked, 19.6s Time] [2023-11-19 05:08:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-19 05:08:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 633. [2023-11-19 05:08:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 398 states have (on average 1.3894472361809045) internal successors, (553), 411 states have internal predecessors, (553), 192 states have call successors, (192), 43 states have call predecessors, (192), 42 states have return successors, (191), 190 states have call predecessors, (191), 191 states have call successors, (191) [2023-11-19 05:08:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 936 transitions. [2023-11-19 05:08:29,594 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 936 transitions. Word has length 196 [2023-11-19 05:08:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:29,595 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 936 transitions. [2023-11-19 05:08:29,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 05:08:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 936 transitions. [2023-11-19 05:08:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-19 05:08:29,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:29,604 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:29,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:08:29,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:29,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1066101764, now seen corresponding path program 1 times [2023-11-19 05:08:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260276390] [2023-11-19 05:08:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:30,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:08:30,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433304187] [2023-11-19 05:08:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:30,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:30,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:30,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:08:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:31,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:31,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2023-11-19 05:08:31,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:31,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:31,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260276390] [2023-11-19 05:08:31,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:08:31,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433304187] [2023-11-19 05:08:31,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433304187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:31,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:31,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022224230] [2023-11-19 05:08:31,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:31,255 INFO L87 Difference]: Start difference. First operand 633 states and 936 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, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 05:08:33,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:35,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:37,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:39,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:41,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:43,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:45,061 INFO L93 Difference]: Finished difference Result 1253 states and 1854 transitions. [2023-11-19 05:08:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:45,063 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, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 235 [2023-11-19 05:08:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:45,071 INFO L225 Difference]: With dead ends: 1253 [2023-11-19 05:08:45,072 INFO L226 Difference]: Without dead ends: 638 [2023-11-19 05:08:45,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:45,075 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:45,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1000 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 6 Unknown, 0 Unchecked, 13.7s Time] [2023-11-19 05:08:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-11-19 05:08:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2023-11-19 05:08:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 399 states have (on average 1.3884711779448622) internal successors, (554), 412 states have internal predecessors, (554), 192 states have call successors, (192), 43 states have call predecessors, (192), 42 states have return successors, (191), 190 states have call predecessors, (191), 191 states have call successors, (191) [2023-11-19 05:08:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 937 transitions. [2023-11-19 05:08:45,184 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 937 transitions. Word has length 235 [2023-11-19 05:08:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:45,186 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 937 transitions. [2023-11-19 05:08:45,186 INFO L496 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, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 05:08:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 937 transitions. [2023-11-19 05:08:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-19 05:08:45,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:45,195 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:45,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:45,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:45,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash 834534750, now seen corresponding path program 1 times [2023-11-19 05:08:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:45,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415873828] [2023-11-19 05:08:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:45,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:08:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346794208] [2023-11-19 05:08:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:45,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:45,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a58f739-006d-4127-a2bb-6187edcc7ac2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:08:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:46,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:46,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2023-11-19 05:08:46,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:46,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415873828] [2023-11-19 05:08:46,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:08:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346794208] [2023-11-19 05:08:46,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346794208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708719134] [2023-11-19 05:08:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:46,920 INFO L87 Difference]: Start difference. First operand 634 states and 937 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-19 05:08:49,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:51,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:53,225 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 []