./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/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_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/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_2264dc77-158d-411e-8017-4eeee35082cd/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 be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:21:46,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:21:47,081 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 11:21:47,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:21:47,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:21:47,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:21:47,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:21:47,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:21:47,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:21:47,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:21:47,133 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:21:47,134 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:21:47,135 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:21:47,136 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:21:47,136 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:21:47,137 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:21:47,137 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:21:47,138 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:21:47,138 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:21:47,145 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:21:47,145 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:21:47,146 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:21:47,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:21:47,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:21:47,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:21:47,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:21:47,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:21:47,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:21:47,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:21:47,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:21:47,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:21:47,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:21:47,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:21:47,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:21:47,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:21:47,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:47,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:21:47,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:21:47,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:21:47,157 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:21:47,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:21:47,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:21:47,160 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:21:47,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:21:47,160 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_2264dc77-158d-411e-8017-4eeee35082cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2024-11-02 11:21:47,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:21:47,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:21:47,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:21:47,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:21:47,478 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:21:47,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 11:21:49,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:21:50,326 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:21:50,328 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2024-11-02 11:21:50,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/data/8b3a83f1f/dec0b962ffc94ebea36a5f9e569f0c49/FLAG1e87698f0 [2024-11-02 11:21:50,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/data/8b3a83f1f/dec0b962ffc94ebea36a5f9e569f0c49 [2024-11-02 11:21:50,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:21:50,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:21:50,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:50,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:21:50,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:21:50,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:50" (1/1) ... [2024-11-02 11:21:50,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a01ecdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:50, skipping insertion in model container [2024-11-02 11:21:50,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:50" (1/1) ... [2024-11-02 11:21:50,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:21:51,577 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_2264dc77-158d-411e-8017-4eeee35082cd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2024-11-02 11:21:52,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:52,148 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:21:52,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5441] [2024-11-02 11:21:52,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5448] [2024-11-02 11:21:52,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5456-5457] [2024-11-02 11:21:52,289 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [5485] [2024-11-02 11:21:52,290 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [5492] [2024-11-02 11:21:52,307 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_2264dc77-158d-411e-8017-4eeee35082cd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2024-11-02 11:21:52,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6225/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/ems_usb.o.c.prepared"), "i" (546), "i" (12UL)); [6159-6160] [2024-11-02 11:21:52,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:52,586 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:21:52,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52 WrapperNode [2024-11-02 11:21:52,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:52,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:52,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:21:52,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:21:52,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,785 INFO L138 Inliner]: procedures = 168, calls = 765, calls flagged for inlining = 78, calls inlined = 78, statements flattened = 2300 [2024-11-02 11:21:52,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:52,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:21:52,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:21:52,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:21:52,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:52,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:53,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:53,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:21:53,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:21:53,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:21:53,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:21:53,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (1/1) ... [2024-11-02 11:21:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:53,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:21:53,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:21:53,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2264dc77-158d-411e-8017-4eeee35082cd/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:21:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-11-02 11:21:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-11-02 11:21:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 11:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2024-11-02 11:21:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2024-11-02 11:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2024-11-02 11:21:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2024-11-02 11:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2024-11-02 11:21:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2024-11-02 11:21:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2024-11-02 11:21:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2024-11-02 11:21:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 11:21:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 11:21:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 11:21:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 11:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-11-02 11:21:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-11-02 11:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2024-11-02 11:21:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2024-11-02 11:21:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-02 11:21:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-02 11:21:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-11-02 11:21:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-11-02 11:21:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2024-11-02 11:21:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2024-11-02 11:21:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-02 11:21:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-02 11:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-02 11:21:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-02 11:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 11:21:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 11:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-11-02 11:21:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-11-02 11:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-02 11:21:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-02 11:21:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-11-02 11:21:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-11-02 11:21:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-02 11:21:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-02 11:21:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-11-02 11:21:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-11-02 11:21:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:21:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 11:21:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 11:21:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 11:21:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 11:21:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:21:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:21:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-02 11:21:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-02 11:21:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2024-11-02 11:21:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2024-11-02 11:21:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:21:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-02 11:21:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-02 11:21:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-02 11:21:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-02 11:21:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2024-11-02 11:21:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2024-11-02 11:21:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:21:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-02 11:21:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-02 11:21:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-02 11:21:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-02 11:21:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:21:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:21:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2024-11-02 11:21:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2024-11-02 11:21:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 11:21:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 11:21:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-02 11:21:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-02 11:21:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-11-02 11:21:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-11-02 11:21:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:21:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2024-11-02 11:21:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2024-11-02 11:21:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-11-02 11:21:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-11-02 11:21:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-02 11:21:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-02 11:21:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2024-11-02 11:21:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2024-11-02 11:21:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-11-02 11:21:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-11-02 11:21:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:21:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2024-11-02 11:21:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2024-11-02 11:21:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2024-11-02 11:21:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2024-11-02 11:21:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-02 11:21:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-02 11:21:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-02 11:21:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-02 11:21:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-02 11:21:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-02 11:21:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-11-02 11:21:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-11-02 11:21:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-02 11:21:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-02 11:21:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-11-02 11:21:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-11-02 11:21:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-02 11:21:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-02 11:21:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-02 11:21:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-02 11:21:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-02 11:21:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-02 11:21:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-11-02 11:21:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-11-02 11:21:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:21:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-11-02 11:21:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-11-02 11:21:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 11:21:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 11:21:53,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 11:21:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:21:53,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:21:53,664 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:21:53,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:21:53,866 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 11:21:54,866 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-02 11:21:59,054 INFO L? ?]: Removed 985 outVars from TransFormulas that were not future-live. [2024-11-02 11:21:59,054 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:22:00,128 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:22:00,128 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 11:22:00,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:22:00 BoogieIcfgContainer [2024-11-02 11:22:00,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:22:00,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:22:00,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:22:00,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:22:00,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:21:50" (1/3) ... [2024-11-02 11:22:00,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625d707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:22:00, skipping insertion in model container [2024-11-02 11:22:00,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:52" (2/3) ... [2024-11-02 11:22:00,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625d707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:22:00, skipping insertion in model container [2024-11-02 11:22:00,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:22:00" (3/3) ... [2024-11-02 11:22:00,138 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2024-11-02 11:22:00,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:22:00,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:22:00,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:22:00,267 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;@1e75f95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:22:00,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:22:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 542 states, 333 states have (on average 1.3543543543543544) internal successors, (451), 359 states have internal predecessors, (451), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) [2024-11-02 11:22:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 11:22:00,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:00,286 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:00,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:00,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -860920386, now seen corresponding path program 1 times [2024-11-02 11:22:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:00,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568984404] [2024-11-02 11:22:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 11:22:04,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568984404] [2024-11-02 11:22:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568984404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:22:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:22:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:22:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11382740] [2024-11-02 11:22:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:22:04,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:22:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:22:04,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:22:04,156 INFO L87 Difference]: Start difference. First operand has 542 states, 333 states have (on average 1.3543543543543544) internal successors, (451), 359 states have internal predecessors, (451), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:22:06,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:08,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:10,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:13,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:15,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:16,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:22:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:18,588 INFO L93 Difference]: Finished difference Result 1594 states and 2231 transitions. [2024-11-02 11:22:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:22:18,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-02 11:22:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:18,613 INFO L225 Difference]: With dead ends: 1594 [2024-11-02 11:22:18,613 INFO L226 Difference]: Without dead ends: 1037 [2024-11-02 11:22:18,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:22:18,623 INFO L432 NwaCegarLoop]: 650 mSDtfsCounter, 715 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:18,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1287 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 5 Unknown, 0 Unchecked, 14.2s Time] [2024-11-02 11:22:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-11-02 11:22:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2024-11-02 11:22:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 645 states have (on average 1.3255813953488371) internal successors, (855), 677 states have internal predecessors, (855), 293 states have call successors, (293), 99 states have call predecessors, (293), 98 states have return successors, (288), 278 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-02 11:22:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1436 transitions. [2024-11-02 11:22:18,891 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1436 transitions. Word has length 23 [2024-11-02 11:22:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:18,892 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1436 transitions. [2024-11-02 11:22:18,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:22:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1436 transitions. [2024-11-02 11:22:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 11:22:18,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:18,895 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:18,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:22:18,897 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:18,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash -196166894, now seen corresponding path program 1 times [2024-11-02 11:22:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:18,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133419886] [2024-11-02 11:22:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:22:22,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133419886] [2024-11-02 11:22:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133419886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:22:22,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:22:22,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:22:22,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646609786] [2024-11-02 11:22:22,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:22:22,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:22:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:22:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:22:22,041 INFO L87 Difference]: Start difference. First operand 1037 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)