./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire --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 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:01,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:01,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:01,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:01,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:01,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:01,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:01,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:01,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:01,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:01,757 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:01,759 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:01,760 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:01,762 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:01,763 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:01,764 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:01,764 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:01,765 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:01,766 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:01,767 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:01,769 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:01,770 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:01,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:01,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:01,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:01,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:01,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:01,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:01,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:01,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:01,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:01,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:01,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:01,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:01,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:01,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:01,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:01,781 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:01,781 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:01,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:01,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:01,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:01,783 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:01,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:01,784 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_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 [2023-11-23 21:13:02,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:02,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:02,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:02,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:02,190 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:02,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2023-11-23 21:13:06,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:06,879 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:06,880 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2023-11-23 21:13:06,931 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/data/d47c40286/4960d6e182894bbd8a1f5d7cc549c309/FLAG4753dea2e [2023-11-23 21:13:06,949 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/data/d47c40286/4960d6e182894bbd8a1f5d7cc549c309 [2023-11-23 21:13:06,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:06,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:06,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:06,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:06,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:06,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:06" (1/1) ... [2023-11-23 21:13:06,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446327e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:06, skipping insertion in model container [2023-11-23 21:13:06,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:06" (1/1) ... [2023-11-23 21:13:07,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:09,550 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_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2023-11-23 21:13:09,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:09,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:10,095 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5693-5694] [2023-11-23 21:13:10,100 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5722-5723] [2023-11-23 21:13:10,441 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_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2023-11-23 21:13:10,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:10,568 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:10,576 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:10,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10 WrapperNode [2023-11-23 21:13:10,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:10,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:10,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:10,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:10,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:10,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:10,969 INFO L138 Inliner]: procedures = 258, calls = 2408, calls flagged for inlining = 96, calls inlined = 93, statements flattened = 6876 [2023-11-23 21:13:10,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:10,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:10,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:10,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:10,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:10,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:11,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:11,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:11,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:11,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (1/1) ... [2023-11-23 21:13:11,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:11,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:11,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:11,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfad5d28-0280-4490-afa0-2cb0f53cdc7a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:13:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:13:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:13:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:13:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2023-11-23 21:13:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2023-11-23 21:13:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2023-11-23 21:13:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2023-11-23 21:13:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mpctl_mutex [2023-11-23 21:13:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mpctl_mutex [2023-11-23 21:13:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:13:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:13:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_GetIocState [2023-11-23 21:13:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_GetIocState [2023-11-23 21:13:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-11-23 21:13:11,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-11-23 21:13:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2023-11-23 21:13:11,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2023-11-23 21:13:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:13:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:13:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:13:11,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:13:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_syscall_down [2023-11-23 21:13:11,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_syscall_down [2023-11-23 21:13:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_device_driver_deregister [2023-11-23 21:13:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_device_driver_deregister [2023-11-23 21:13:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:13:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:13:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_remove [2023-11-23 21:13:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_remove [2023-11-23 21:13:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:13:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:13:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:13:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:13:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame [2023-11-23 21:13:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame [2023-11-23 21:13:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:13:11,631 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:13:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:13:11,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:13:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:13:11,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:13:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure __mptctl_ioctl [2023-11-23 21:13:11,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __mptctl_ioctl [2023-11-23 21:13:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_mpt_command [2023-11-23 21:13:11,632 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_mpt_command [2023-11-23 21:13:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_fw_download [2023-11-23 21:13:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_fw_download [2023-11-23 21:13:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:13:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:13:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame_hi_pri [2023-11-23 21:13:11,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame_hi_pri [2023-11-23 21:13:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:13:11,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:13:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:13:11,635 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:13:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_fw_memory [2023-11-23 21:13:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_fw_memory [2023-11-23 21:13:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_taskmgmt [2023-11-23 21:13:11,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_taskmgmt [2023-11-23 21:13:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:13:11,638 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:13:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:13:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:13:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_clear_taskmgmt_in_progress_flag [2023-11-23 21:13:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_clear_taskmgmt_in_progress_flag [2023-11-23 21:13:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:13:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:13:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_timeout_expired [2023-11-23 21:13:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_timeout_expired [2023-11-23 21:13:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:13:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:13:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:13:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:13:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:13:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:13:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mpctl_mutex [2023-11-23 21:13:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mpctl_mutex [2023-11-23 21:13:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_fasync [2023-11-23 21:13:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_fasync [2023-11-23 21:13:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:13:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:13:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-23 21:13:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-23 21:13:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_set_taskmgmt_in_progress_flag [2023-11-23 21:13:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_set_taskmgmt_in_progress_flag [2023-11-23 21:13:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:13:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:13:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_verify_adapter [2023-11-23 21:13:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_verify_adapter [2023-11-23 21:13:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:13:11,646 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:13:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:13:11,646 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:13:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 21:13:11,647 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 21:13:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_deregister [2023-11-23 21:13:11,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_deregister [2023-11-23 21:13:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_sgl [2023-11-23 21:13:11,647 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_sgl [2023-11-23 21:13:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:13:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:13:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:13:11,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:13:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:13:11,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 21:13:11,650 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 21:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:13:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_get_msg_frame [2023-11-23 21:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_get_msg_frame [2023-11-23 21:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_send_handshake_request [2023-11-23 21:13:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_send_handshake_request [2023-11-23 21:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_register [2023-11-23 21:13:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_register [2023-11-23 21:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2023-11-23 21:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2023-11-23 21:13:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2023-11-23 21:13:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-23 21:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_config [2023-11-23 21:13:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_config [2023-11-23 21:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_msg_frame [2023-11-23 21:13:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_msg_frame [2023-11-23 21:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:13:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:13:12,581 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:12,585 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:16,956 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:13:24,875 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:27,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:27,753 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:13:27,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:27 BoogieIcfgContainer [2023-11-23 21:13:27,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:27,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:27,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:27,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:27,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:06" (1/3) ... [2023-11-23 21:13:27,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2925fb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:27, skipping insertion in model container [2023-11-23 21:13:27,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:10" (2/3) ... [2023-11-23 21:13:27,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2925fb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:27, skipping insertion in model container [2023-11-23 21:13:27,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:27" (3/3) ... [2023-11-23 21:13:27,776 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2023-11-23 21:13:27,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:27,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:27,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:27,895 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;@4ec0964a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:27,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 1236 states, 784 states have (on average 1.3520408163265305) internal successors, (1060), 804 states have internal predecessors, (1060), 387 states have call successors, (387), 64 states have call predecessors, (387), 63 states have return successors, (383), 382 states have call predecessors, (383), 383 states have call successors, (383) [2023-11-23 21:13:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 21:13:27,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:27,922 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:27,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1612692604, now seen corresponding path program 1 times [2023-11-23 21:13:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064429310] [2023-11-23 21:13:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-23 21:13:28,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064429310] [2023-11-23 21:13:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064429310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566894929] [2023-11-23 21:13:28,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:28,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:28,905 INFO L87 Difference]: Start difference. First operand has 1236 states, 784 states have (on average 1.3520408163265305) internal successors, (1060), 804 states have internal predecessors, (1060), 387 states have call successors, (387), 64 states have call predecessors, (387), 63 states have return successors, (383), 382 states have call predecessors, (383), 383 states have call successors, (383) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:13:31,450 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 [] [2023-11-23 21:13:32,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:35,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:37,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:39,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:41,645 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 [] [2023-11-23 21:13:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:44,893 INFO L93 Difference]: Finished difference Result 2537 states and 3781 transitions. [2023-11-23 21:13:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2023-11-23 21:13:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:44,937 INFO L225 Difference]: With dead ends: 2537 [2023-11-23 21:13:44,937 INFO L226 Difference]: Without dead ends: 1309 [2023-11-23 21:13:44,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:44,958 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 144 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:44,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 3203 Invalid, 420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 409 Invalid, 5 Unknown, 0 Unchecked, 15.7s Time] [2023-11-23 21:13:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-23 21:13:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1294. [2023-11-23 21:13:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 825 states have (on average 1.3442424242424242) internal successors, (1109), 841 states have internal predecessors, (1109), 394 states have call successors, (394), 75 states have call predecessors, (394), 74 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) [2023-11-23 21:13:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1886 transitions. [2023-11-23 21:13:45,263 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1886 transitions. Word has length 97 [2023-11-23 21:13:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:45,264 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 1886 transitions. [2023-11-23 21:13:45,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:13:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1886 transitions. [2023-11-23 21:13:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 21:13:45,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:45,271 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 21:13:45,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:13:45,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:45,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash -950070068, now seen corresponding path program 1 times [2023-11-23 21:13:45,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154584187] [2023-11-23 21:13:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-23 21:13:45,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154584187] [2023-11-23 21:13:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154584187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364198131] [2023-11-23 21:13:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:45,785 INFO L87 Difference]: Start difference. First operand 1294 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:13:48,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:50,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:52,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:55,262 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 []