./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 623160d4598cd0ad84c7dc43ec65a6f971cb966f22ee32963f1c0c6e1de756e1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:39,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:40,041 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:37:40,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:40,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:40,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:40,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:40,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:40,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:40,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:40,092 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:40,093 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:40,093 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:40,094 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:40,096 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:40,097 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:40,097 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:40,098 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:40,098 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:40,098 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:40,099 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:40,110 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:40,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:40,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:40,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:40,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:40,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:40,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:40,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:40,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:40,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:40,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:40,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:40,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:40,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:40,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:40,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:40,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:40,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:40,142 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:40,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:40,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:40,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:40,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:40,143 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_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 623160d4598cd0ad84c7dc43ec65a6f971cb966f22ee32963f1c0c6e1de756e1 [2024-11-02 12:37:40,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:40,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:40,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:40,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:40,720 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:40,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i Unable to find full path for "g++" [2024-11-02 12:37:42,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:43,354 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:43,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i [2024-11-02 12:37:43,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/data/4eda84f95/cf51687319c34354b217f12164c92d82/FLAG33195915d [2024-11-02 12:37:43,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/data/4eda84f95/cf51687319c34354b217f12164c92d82 [2024-11-02 12:37:43,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:43,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:43,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:43,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:43,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:43,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:43" (1/1) ... [2024-11-02 12:37:43,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e8dd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:43, skipping insertion in model container [2024-11-02 12:37:43,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:43" (1/1) ... [2024-11-02 12:37:44,051 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:45,154 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i[148506,148519] [2024-11-02 12:37:45,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:45,235 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:45,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/inst/current/envs/linux-3.0.1/linux-3.0.1/arch/x86/include/asm/paravirt.h"), "i" (863), "i" (sizeof(struct bug_entry ))); [3395-3401] [2024-11-02 12:37:45,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("" "771:\n\t" "call *%c[paravirt_opptr];" "\n" "772:\n" ".pushsection .parainstructions,\"a\"\n" " " ".balign 8" " " "\n" " " ".quad" " " " 771b\n" " .byte " "%c[paravirt_typenum]" "\n" " .byte 772b-771b\n" " .short " "%c[paravirt_clobber]" "\n" ".popsection\n" "": "=a" (__eax): [paravirt_typenum] "i" ((unsigned long )((unsigned int )(& ((struct paravirt_patch_template *)0)->pv_irq_ops.irq_disable.func)) / sizeof(void *)), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [3420-3444] [2024-11-02 12:37:45,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/inst/current/envs/linux-3.0.1/linux-3.0.1/arch/x86/include/asm/paravirt.h"), "i" (868), "i" (sizeof(struct bug_entry ))); [3474-3480] [2024-11-02 12:37:45,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("" "771:\n\t" "call *%c[paravirt_opptr];" "\n" "772:\n" ".pushsection .parainstructions,\"a\"\n" " " ".balign 8" " " "\n" " " ".quad" " " " 771b\n" " .byte " "%c[paravirt_typenum]" "\n" " .byte 772b-771b\n" " .short " "%c[paravirt_clobber]" "\n" ".popsection\n" "": "=a" (__eax): [paravirt_typenum] "i" ((unsigned long )((unsigned int )(& ((struct paravirt_patch_template *)0)->pv_irq_ops.irq_enable.func)) / sizeof(void *)), [paravirt_opptr] "i" (& pv_irq_ops.irq_enable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [3499-3523] [2024-11-02 12:37:45,618 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-misc-c2port-core.ko.cil.out.i[148506,148519] [2024-11-02 12:37:45,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:45,723 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:45,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45 WrapperNode [2024-11-02 12:37:45,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:45,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:45,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:45,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:45,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,873 INFO L138 Inliner]: procedures = 105, calls = 783, calls flagged for inlining = 28, calls inlined = 10, statements flattened = 1122 [2024-11-02 12:37:45,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:45,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:45,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:45,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:45,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:45,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:45,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:45,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:45,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (1/1) ... [2024-11-02 12:37:45,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:46,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:46,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:46,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57753bae-d477-4186-9634-65a90b87dc9f/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-02 12:37:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-02 12:37:46,081 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2024-11-02 12:37:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2024-11-02 12:37:46,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:37:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:37:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:37:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_read_dr [2024-11-02 12:37:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_read_dr [2024-11-02 12:37:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:37:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:37:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_write_ar [2024-11-02 12:37:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_write_ar [2024-11-02 12:37:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2024-11-02 12:37:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2024-11-02 12:37:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:37:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-02 12:37:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-02 12:37:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_poll_out_ready [2024-11-02 12:37:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_poll_out_ready [2024-11-02 12:37:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:37:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_enable [2024-11-02 12:37:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_enable [2024-11-02 12:37:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-02 12:37:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-02 12:37:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_read_ar [2024-11-02 12:37:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_read_ar [2024-11-02 12:37:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-02 12:37:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_strobe_ck [2024-11-02 12:37:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_strobe_ck [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2024-11-02 12:37:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_poll_in_busy [2024-11-02 12:37:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_poll_in_busy [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2024-11-02 12:37:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2024-11-02 12:37:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2024-11-02 12:37:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:37:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-02 12:37:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-02 12:37:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-02 12:37:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_write_dr [2024-11-02 12:37:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_write_dr [2024-11-02 12:37:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_exit [2024-11-02 12:37:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_exit [2024-11-02 12:37:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure c2port_init [2024-11-02 12:37:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure c2port_init [2024-11-02 12:37:46,430 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:46,434 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:46,991 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 12:37:50,575 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2024-11-02 12:37:50,575 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2024-11-02 12:37:51,009 INFO L? ?]: Removed 272 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:51,009 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:51,470 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:51,470 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-02 12:37:51,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:51 BoogieIcfgContainer [2024-11-02 12:37:51,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:51,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:51,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:51,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:51,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:43" (1/3) ... [2024-11-02 12:37:51,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14758c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:51, skipping insertion in model container [2024-11-02 12:37:51,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:45" (2/3) ... [2024-11-02 12:37:51,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14758c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:51, skipping insertion in model container [2024-11-02 12:37:51,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:51" (3/3) ... [2024-11-02 12:37:51,482 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-misc-c2port-core.ko.cil.out.i [2024-11-02 12:37:51,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:51,506 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:51,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:51,620 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c221537, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:51,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 364 states, 226 states have (on average 1.3539823008849559) internal successors, (306), 232 states have internal predecessors, (306), 113 states have call successors, (113), 23 states have call predecessors, (113), 23 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-02 12:37:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:37:51,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:51,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:51,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:51,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1310532083, now seen corresponding path program 1 times [2024-11-02 12:37:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212391582] [2024-11-02 12:37:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:59,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212391582] [2024-11-02 12:37:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212391582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:59,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:59,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:37:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023252403] [2024-11-02 12:37:59,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:59,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:59,269 INFO L87 Difference]: Start difference. First operand has 364 states, 226 states have (on average 1.3539823008849559) internal successors, (306), 232 states have internal predecessors, (306), 113 states have call successors, (113), 23 states have call predecessors, (113), 23 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:38:01,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:38:03,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:38:05,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:38:08,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:38:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:09,760 INFO L93 Difference]: Finished difference Result 715 states and 1110 transitions. [2024-11-02 12:38:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2024-11-02 12:38:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:09,785 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:38:09,786 INFO L226 Difference]: Without dead ends: 361 [2024-11-02 12:38:09,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:09,802 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:09,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1897 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2024-11-02 12:38:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-02 12:38:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-02 12:38:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 224 states have (on average 1.2544642857142858) internal successors, (281), 226 states have internal predecessors, (281), 113 states have call successors, (113), 23 states have call predecessors, (113), 23 states have return successors, (112), 112 states have call predecessors, (112), 111 states have call successors, (112) [2024-11-02 12:38:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 506 transitions. [2024-11-02 12:38:09,972 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 506 transitions. Word has length 20 [2024-11-02 12:38:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:09,974 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 506 transitions. [2024-11-02 12:38:09,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:38:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 506 transitions. [2024-11-02 12:38:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:38:09,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:09,976 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:09,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:09,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:09,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1106132046, now seen corresponding path program 1 times [2024-11-02 12:38:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:09,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98701830] [2024-11-02 12:38:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:15,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:15,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98701830] [2024-11-02 12:38:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98701830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:15,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:15,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591997819] [2024-11-02 12:38:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:15,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:15,051 INFO L87 Difference]: Start difference. First operand 361 states and 506 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:38:17,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []