./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--usb_8dev.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_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/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_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/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--usb_8dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/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_0554b4e3-b2f8-4a89-836f-964d46d67715/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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:28,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:28,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:27:28,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:28,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:28,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:28,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:28,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:28,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:28,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:28,798 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:28,798 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:28,799 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:28,802 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:28,802 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:28,803 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:28,803 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:28,803 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:28,804 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:28,804 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:28,805 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:28,805 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:28,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:28,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:28,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:28,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:28,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:28,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:28,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:28,810 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:28,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:28,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:28,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:28,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:28,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:28,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:28,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:28,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:28,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:28,814 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:28,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:28,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:28,815 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:28,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:28,816 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_0554b4e3-b2f8-4a89-836f-964d46d67715/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2024-11-02 12:27:29,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:29,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:29,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:29,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:29,202 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:29,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:27:31,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:31,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:31,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-11-02 12:27:31,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/data/8baeabf84/a7d69cc273f64baeae0bb6c406dd6570/FLAG6ca27688b [2024-11-02 12:27:31,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/data/8baeabf84/a7d69cc273f64baeae0bb6c406dd6570 [2024-11-02 12:27:31,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:31,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:31,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:31,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:31,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:31,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:31" (1/1) ... [2024-11-02 12:27:31,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47aa5450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:31, skipping insertion in model container [2024-11-02 12:27:31,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:31" (1/1) ... [2024-11-02 12:27:32,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:33,298 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_0554b4e3-b2f8-4a89-836f-964d46d67715/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2024-11-02 12:27:33,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:33,875 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:34,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [5402] [2024-11-02 12:27:34,109 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"); [5440] [2024-11-02 12:27:34,113 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)); [5447] [2024-11-02 12:27:34,114 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"); [5455-5456] [2024-11-02 12:27:34,117 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)); [5484] [2024-11-02 12:27:34,121 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)); [5491] [2024-11-02 12:27:34,142 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_0554b4e3-b2f8-4a89-836f-964d46d67715/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2024-11-02 12:27:34,248 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/6228/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/usb_8dev.o.c.prepared"), "i" (621), "i" (12UL)); [6324-6325] [2024-11-02 12:27:34,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:34,382 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:34,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34 WrapperNode [2024-11-02 12:27:34,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:34,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:34,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:34,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:34,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,596 INFO L138 Inliner]: procedures = 174, calls = 830, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 2654 [2024-11-02 12:27:34,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:34,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:34,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:34,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:34,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:34,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:34,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:34,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:34,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (1/1) ... [2024-11-02 12:27:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:34,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:34,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0554b4e3-b2f8-4a89-836f-964d46d67715/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-11-02 12:27:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-11-02 12:27:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2024-11-02 12:27:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2024-11-02 12:27:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2024-11-02 12:27:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2024-11-02 12:27:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2024-11-02 12:27:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2024-11-02 12:27:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:27:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2024-11-02 12:27:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2024-11-02 12:27:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:27:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2024-11-02 12:27:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2024-11-02 12:27:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:27:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:27:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:27:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:27:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-11-02 12:27:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-11-02 12:27:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-02 12:27:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-02 12:27:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-11-02 12:27:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-11-02 12:27:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-02 12:27:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-02 12:27:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-02 12:27:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-02 12:27:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:27:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:27:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-11-02 12:27:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-11-02 12:27:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2024-11-02 12:27:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2024-11-02 12:27:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-11-02 12:27:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-11-02 12:27:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-11-02 12:27:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-11-02 12:27:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:27:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:27:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:27:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:27:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:27:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:27:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:27:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:27:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:27:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-02 12:27:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-02 12:27:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:27:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-02 12:27:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-02 12:27:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-02 12:27:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-02 12:27:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2024-11-02 12:27:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2024-11-02 12:27:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-02 12:27:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-02 12:27:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:27:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:27:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:27:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:27:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-02 12:27:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-02 12:27:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-11-02 12:27:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-11-02 12:27:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:27:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-11-02 12:27:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-11-02 12:27:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-02 12:27:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-02 12:27:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-11-02 12:27:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-11-02 12:27:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2024-11-02 12:27:34,965 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2024-11-02 12:27:34,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:27:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2024-11-02 12:27:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2024-11-02 12:27:34,966 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-02 12:27:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-02 12:27:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-11-02 12:27:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-11-02 12:27:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-02 12:27:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-02 12:27:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-11-02 12:27:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-11-02 12:27:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-02 12:27:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-02 12:27:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-02 12:27:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-02 12:27:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-02 12:27:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-02 12:27:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-11-02 12:27:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-11-02 12:27:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-11-02 12:27:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-11-02 12:27:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2024-11-02 12:27:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2024-11-02 12:27:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:27:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2024-11-02 12:27:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2024-11-02 12:27:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:27:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:27:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2024-11-02 12:27:34,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2024-11-02 12:27:35,509 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:35,513 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:35,755 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:27:36,824 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-02 12:27:43,782 INFO L? ?]: Removed 1095 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:43,783 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:44,720 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:44,720 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:27:44,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:44 BoogieIcfgContainer [2024-11-02 12:27:44,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:44,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:44,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:44,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:44,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:31" (1/3) ... [2024-11-02 12:27:44,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b42ed1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:44, skipping insertion in model container [2024-11-02 12:27:44,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:34" (2/3) ... [2024-11-02 12:27:44,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b42ed1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:44, skipping insertion in model container [2024-11-02 12:27:44,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:44" (3/3) ... [2024-11-02 12:27:44,733 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-11-02 12:27:44,752 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:44,752 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:27:44,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:44,866 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;@760c4ccf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:44,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:27:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 335 states have (on average 1.3522388059701493) internal successors, (453), 355 states have internal predecessors, (453), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-02 12:27:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:27:44,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:44,888 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 12:27:44,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:44,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1469728104, now seen corresponding path program 1 times [2024-11-02 12:27:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:44,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590873669] [2024-11-02 12:27:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:44,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:48,447 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 12:27:48,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590873669] [2024-11-02 12:27:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590873669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811552912] [2024-11-02 12:27:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:48,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:48,497 INFO L87 Difference]: Start difference. First operand has 537 states, 335 states have (on average 1.3522388059701493) internal successors, (453), 355 states have internal predecessors, (453), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) 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 12:27:50,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:27:52,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:27:55,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:55,502 INFO L93 Difference]: Finished difference Result 1579 states and 2225 transitions. [2024-11-02 12:27:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:55,505 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 12:27:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:55,533 INFO L225 Difference]: With dead ends: 1579 [2024-11-02 12:27:55,533 INFO L226 Difference]: Without dead ends: 1027 [2024-11-02 12:27:55,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:55,550 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 713 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:55,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1265 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2024-11-02 12:27:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-02 12:27:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2024-11-02 12:27:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 649 states have (on average 1.3235747303543914) internal successors, (859), 669 states have internal predecessors, (859), 289 states have call successors, (289), 89 states have call predecessors, (289), 88 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2024-11-02 12:27:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1432 transitions. [2024-11-02 12:27:55,770 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1432 transitions. Word has length 23 [2024-11-02 12:27:55,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:55,772 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1432 transitions. [2024-11-02 12:27:55,772 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 12:27:55,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1432 transitions. [2024-11-02 12:27:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:27:55,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:55,776 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 12:27:55,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:55,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:55,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1344320990, now seen corresponding path program 1 times [2024-11-02 12:27:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684331180] [2024-11-02 12:27:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:59,139 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 12:27:59,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684331180] [2024-11-02 12:27:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684331180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466625896] [2024-11-02 12:27:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:59,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:59,145 INFO L87 Difference]: Start difference. First operand 1027 states and 1432 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)