./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh --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 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:58:17,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:58:17,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:58:17,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:58:17,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:58:17,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:58:17,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:58:17,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:58:17,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:58:17,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:58:17,163 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:58:17,163 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:58:17,164 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:58:17,164 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:58:17,164 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:58:17,165 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:58:17,165 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:58:17,166 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:58:17,166 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:58:17,167 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:58:17,167 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:58:17,170 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:58:17,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:58:17,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:58:17,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:58:17,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:58:17,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:58:17,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:58:17,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:58:17,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:58:17,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:58:17,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:58:17,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:58:17,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:58:17,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:17,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:58:17,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:58:17,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:58:17,177 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:58:17,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:58:17,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:58:17,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:58:17,178 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:58:17,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:58:17,178 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_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 [2023-12-02 17:58:17,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:58:17,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:58:17,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:58:17,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:58:17,422 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:58:17,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2023-12-02 17:58:20,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:58:20,603 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:58:20,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2023-12-02 17:58:20,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/data/c3e8316ad/ca0b0ca624f34d7da207e51c77f3c433/FLAGd6d6dfecb [2023-12-02 17:58:20,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/data/c3e8316ad/ca0b0ca624f34d7da207e51c77f3c433 [2023-12-02 17:58:20,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:58:20,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:58:20,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:20,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:58:20,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:58:20,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:20" (1/1) ... [2023-12-02 17:58:20,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe7f9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:20, skipping insertion in model container [2023-12-02 17:58:20,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:20" (1/1) ... [2023-12-02 17:58:20,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:58:22,916 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2023-12-02 17:58:22,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:23,039 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:58:23,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3521] [2023-12-02 17:58:23,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3523] [2023-12-02 17:58:23,111 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3546] [2023-12-02 17:58:23,111 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3548] [2023-12-02 17:58:23,112 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3558-3559] [2023-12-02 17:58:23,117 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; addl %1,%0": "+m" (v->counter): "ir" (i)); [3756] [2023-12-02 17:58:23,117 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; subl %1,%0": "+m" (v->counter): "ir" (i)); [3763] [2023-12-02 17:58:23,118 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; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [3771-3772] [2023-12-02 17:58:23,118 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)); [3779] [2023-12-02 17:58:23,119 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)); [3786] [2023-12-02 17:58:23,119 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3797-3798] [2023-12-02 17:58:23,120 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3801-3802] [2023-12-02 17:58:23,120 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3805-3806] [2023-12-02 17:58:23,120 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3809-3810] [2023-12-02 17:58:23,121 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; cmpxchgb %2,%1": "=a" (__ret), "+m" (*__ptr): "q" (__new), "0" (__old): "memory"); [3834-3835] [2023-12-02 17:58:23,122 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; cmpxchgw %2,%1": "=a" (__ret), "+m" (*__ptr___0): "r" (__new), "0" (__old): "memory"); [3839-3840] [2023-12-02 17:58:23,122 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; cmpxchgl %2,%1": "=a" (__ret), "+m" (*__ptr___1): "r" (__new), "0" (__old): "memory"); [3844-3845] [2023-12-02 17:58:23,123 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; cmpxchgq %2,%1": "=a" (__ret), "+m" (*__ptr___2): "r" (__new), "0" (__old): "memory"); [3849-3850] [2023-12-02 17:58:23,124 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3902] [2023-12-02 17:58:23,124 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3905] [2023-12-02 17:58:23,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (val)); [3907] [2023-12-02 17:58:23,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3912] [2023-12-02 17:58:23,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3915] [2023-12-02 17:58:23,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3917] [2023-12-02 17:58:23,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3922] [2023-12-02 17:58:23,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3925] [2023-12-02 17:58:23,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3927] [2023-12-02 17:58:23,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3932] [2023-12-02 17:58:23,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3935] [2023-12-02 17:58:23,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (val)); [3937] [2023-12-02 17:58:23,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3955] [2023-12-02 17:58:23,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3958] [2023-12-02 17:58:23,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (- val)); [3960] [2023-12-02 17:58:23,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3965] [2023-12-02 17:58:23,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3968] [2023-12-02 17:58:23,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3970] [2023-12-02 17:58:23,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3975] [2023-12-02 17:58:23,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3978] [2023-12-02 17:58:23,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3980] [2023-12-02 17:58:23,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3985] [2023-12-02 17:58:23,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3988] [2023-12-02 17:58:23,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (- val)); [3990] [2023-12-02 17:58:23,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4033] [2023-12-02 17:58:23,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4040] [2023-12-02 17:58:23,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4271] [2023-12-02 17:58:23,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7357] [2023-12-02 17:58:23,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8859] [2023-12-02 17:58:23,394 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2023-12-02 17:58:23,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:23,548 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,548 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,549 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,549 WARN L675 CHandler]: The function __cmpxchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,549 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,549 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:23,557 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:58:23,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23 WrapperNode [2023-12-02 17:58:23,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:23,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:23,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:58:23,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:58:23,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:23,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:23,811 INFO L138 Inliner]: procedures = 314, calls = 3877, calls flagged for inlining = 120, calls inlined = 83, statements flattened = 4845 [2023-12-02 17:58:23,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:23,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:58:23,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:58:23,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:58:23,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:23,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:23,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:23,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:58:24,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:58:24,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:58:24,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:58:24,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (1/1) ... [2023-12-02 17:58:24,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:24,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:24,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:58:24,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:58:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2023-12-02 17:58:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2023-12-02 17:58:24,217 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2023-12-02 17:58:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-12-02 17:58:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-12-02 17:58:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 17:58:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2023-12-02 17:58:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2023-12-02 17:58:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 17:58:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 17:58:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 17:58:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 17:58:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 17:58:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2023-12-02 17:58:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2023-12-02 17:58:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 17:58:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 17:58:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 17:58:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 17:58:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 17:58:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 17:58:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2023-12-02 17:58:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2023-12-02 17:58:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2023-12-02 17:58:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2023-12-02 17:58:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2023-12-02 17:58:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2023-12-02 17:58:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2023-12-02 17:58:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2023-12-02 17:58:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2023-12-02 17:58:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2023-12-02 17:58:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2023-12-02 17:58:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2023-12-02 17:58:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2023-12-02 17:58:24,222 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2023-12-02 17:58:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 17:58:24,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 17:58:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 17:58:24,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 17:58:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2023-12-02 17:58:24,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2023-12-02 17:58:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2023-12-02 17:58:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 17:58:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:58:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2023-12-02 17:58:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2023-12-02 17:58:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2023-12-02 17:58:24,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2023-12-02 17:58:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-12-02 17:58:24,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-12-02 17:58:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2023-12-02 17:58:24,224 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2023-12-02 17:58:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:58:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 17:58:24,224 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 17:58:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2023-12-02 17:58:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2023-12-02 17:58:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2023-12-02 17:58:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2023-12-02 17:58:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:58:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-12-02 17:58:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 17:58:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 17:58:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2023-12-02 17:58:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2023-12-02 17:58:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2023-12-02 17:58:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2023-12-02 17:58:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2023-12-02 17:58:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2023-12-02 17:58:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2023-12-02 17:58:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2023-12-02 17:58:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2023-12-02 17:58:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 17:58:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 17:58:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 17:58:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 17:58:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 17:58:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 17:58:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2023-12-02 17:58:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2023-12-02 17:58:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2023-12-02 17:58:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2023-12-02 17:58:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 17:58:24,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 17:58:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 17:58:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2023-12-02 17:58:24,229 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2023-12-02 17:58:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 17:58:24,230 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 17:58:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 17:58:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2023-12-02 17:58:24,230 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2023-12-02 17:58:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2023-12-02 17:58:24,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2023-12-02 17:58:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-12-02 17:58:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-12-02 17:58:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2023-12-02 17:58:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2023-12-02 17:58:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2023-12-02 17:58:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2023-12-02 17:58:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:58:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2023-12-02 17:58:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2023-12-02 17:58:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2023-12-02 17:58:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2023-12-02 17:58:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2023-12-02 17:58:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2023-12-02 17:58:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 17:58:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 17:58:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-12-02 17:58:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-12-02 17:58:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2023-12-02 17:58:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-12-02 17:58:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2023-12-02 17:58:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2023-12-02 17:58:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 17:58:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 17:58:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 17:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-12-02 17:58:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-12-02 17:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-12-02 17:58:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-12-02 17:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 17:58:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 17:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-12-02 17:58:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2023-12-02 17:58:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2023-12-02 17:58:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 17:58:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2023-12-02 17:58:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2023-12-02 17:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 17:58:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 17:58:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2023-12-02 17:58:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2023-12-02 17:58:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2023-12-02 17:58:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2023-12-02 17:58:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2023-12-02 17:58:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2023-12-02 17:58:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 17:58:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2023-12-02 17:58:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 17:58:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2023-12-02 17:58:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-12-02 17:58:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-12-02 17:58:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2023-12-02 17:58:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2023-12-02 17:58:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 17:58:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2023-12-02 17:58:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2023-12-02 17:58:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2023-12-02 17:58:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2023-12-02 17:58:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 17:58:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 17:58:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-12-02 17:58:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-12-02 17:58:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 17:58:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2023-12-02 17:58:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2023-12-02 17:58:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 17:58:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 17:58:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2023-12-02 17:58:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2023-12-02 17:58:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2023-12-02 17:58:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 17:58:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2023-12-02 17:58:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2023-12-02 17:58:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2023-12-02 17:58:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2023-12-02 17:58:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2023-12-02 17:58:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-12-02 17:58:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-12-02 17:58:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2023-12-02 17:58:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2023-12-02 17:58:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 17:58:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:58:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:58:24,958 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:58:24,962 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:58:25,478 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 17:58:35,861 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:58:37,219 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:58:37,219 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:58:37,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:58:37 BoogieIcfgContainer [2023-12-02 17:58:37,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:58:37,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:58:37,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:58:37,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:58:37,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:58:20" (1/3) ... [2023-12-02 17:58:37,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f938d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:58:37, skipping insertion in model container [2023-12-02 17:58:37,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:23" (2/3) ... [2023-12-02 17:58:37,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f938d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:58:37, skipping insertion in model container [2023-12-02 17:58:37,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:58:37" (3/3) ... [2023-12-02 17:58:37,230 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2023-12-02 17:58:37,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:58:37,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:58:37,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:58:37,335 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ad8f1e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:58:37,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:58:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 1455 states, 896 states have (on average 1.4029017857142858) internal successors, (1257), 984 states have internal predecessors, (1257), 459 states have call successors, (459), 99 states have call predecessors, (459), 98 states have return successors, (441), 419 states have call predecessors, (441), 441 states have call successors, (441) [2023-12-02 17:58:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-02 17:58:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:37,391 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:37,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:58:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1964414021, now seen corresponding path program 1 times [2023-12-02 17:58:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900809515] [2023-12-02 17:58:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7971 trivial. 0 not checked. [2023-12-02 17:58:39,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:39,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900809515] [2023-12-02 17:58:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900809515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:39,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:58:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976073990] [2023-12-02 17:58:39,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:58:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:58:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:39,229 INFO L87 Difference]: Start difference. First operand has 1455 states, 896 states have (on average 1.4029017857142858) internal successors, (1257), 984 states have internal predecessors, (1257), 459 states have call successors, (459), 99 states have call predecessors, (459), 98 states have return successors, (441), 419 states have call predecessors, (441), 441 states have call successors, (441) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 17:58:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:42,428 INFO L93 Difference]: Finished difference Result 4078 states and 6135 transitions. [2023-12-02 17:58:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:58:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 583 [2023-12-02 17:58:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:42,468 INFO L225 Difference]: With dead ends: 4078 [2023-12-02 17:58:42,468 INFO L226 Difference]: Without dead ends: 2656 [2023-12-02 17:58:42,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:42,487 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 2036 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:42,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 3787 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 17:58:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2023-12-02 17:58:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2652. [2023-12-02 17:58:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1665 states have (on average 1.393993993993994) internal successors, (2321), 1798 states have internal predecessors, (2321), 795 states have call successors, (795), 192 states have call predecessors, (795), 191 states have return successors, (794), 749 states have call predecessors, (794), 794 states have call successors, (794) [2023-12-02 17:58:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3910 transitions. [2023-12-02 17:58:42,733 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3910 transitions. Word has length 583 [2023-12-02 17:58:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:42,735 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3910 transitions. [2023-12-02 17:58:42,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 17:58:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3910 transitions. [2023-12-02 17:58:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-02 17:58:42,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:42,757 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:58:42,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:58:42,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1686767125, now seen corresponding path program 1 times [2023-12-02 17:58:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297786111] [2023-12-02 17:58:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2023-12-02 17:58:44,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297786111] [2023-12-02 17:58:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297786111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:44,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:58:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701979582] [2023-12-02 17:58:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:58:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:58:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:58:44,467 INFO L87 Difference]: Start difference. First operand 2652 states and 3910 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:58:45,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:58:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:54,032 INFO L93 Difference]: Finished difference Result 10282 states and 15325 transitions. [2023-12-02 17:58:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:58:54,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 599 [2023-12-02 17:58:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:54,081 INFO L225 Difference]: With dead ends: 10282 [2023-12-02 17:58:54,081 INFO L226 Difference]: Without dead ends: 7736 [2023-12-02 17:58:54,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:58:54,094 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 4001 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:54,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 5214 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-02 17:58:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2023-12-02 17:58:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 7718. [2023-12-02 17:58:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7718 states, 4881 states have (on average 1.4015570579799221) internal successors, (6841), 5268 states have internal predecessors, (6841), 2269 states have call successors, (2269), 568 states have call predecessors, (2269), 567 states have return successors, (2432), 2137 states have call predecessors, (2432), 2268 states have call successors, (2432) [2023-12-02 17:58:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7718 states to 7718 states and 11542 transitions. [2023-12-02 17:58:54,514 INFO L78 Accepts]: Start accepts. Automaton has 7718 states and 11542 transitions. Word has length 599 [2023-12-02 17:58:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:54,516 INFO L495 AbstractCegarLoop]: Abstraction has 7718 states and 11542 transitions. [2023-12-02 17:58:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:58:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 7718 states and 11542 transitions. [2023-12-02 17:58:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-02 17:58:54,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:54,531 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:54,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:58:54,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:58:54,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1795975517, now seen corresponding path program 1 times [2023-12-02 17:58:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468621719] [2023-12-02 17:58:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2023-12-02 17:58:55,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468621719] [2023-12-02 17:58:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468621719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:55,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:55,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:58:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14683343] [2023-12-02 17:58:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:58:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:58:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:58:55,654 INFO L87 Difference]: Start difference. First operand 7718 states and 11542 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:02,658 INFO L93 Difference]: Finished difference Result 30538 states and 46473 transitions. [2023-12-02 17:59:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 600 [2023-12-02 17:59:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:02,837 INFO L225 Difference]: With dead ends: 30538 [2023-12-02 17:59:02,838 INFO L226 Difference]: Without dead ends: 22926 [2023-12-02 17:59:02,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:02,881 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 4000 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 5218 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:02,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4000 Valid, 5218 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 17:59:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22926 states. [2023-12-02 17:59:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22926 to 22908. [2023-12-02 17:59:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22908 states, 14529 states have (on average 1.4034689242205245) internal successors, (20391), 15670 states have internal predecessors, (20391), 6683 states have call successors, (6683), 1696 states have call predecessors, (6683), 1695 states have return successors, (7974), 6301 states have call predecessors, (7974), 6682 states have call successors, (7974) [2023-12-02 17:59:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22908 states to 22908 states and 35048 transitions. [2023-12-02 17:59:04,481 INFO L78 Accepts]: Start accepts. Automaton has 22908 states and 35048 transitions. Word has length 600 [2023-12-02 17:59:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 22908 states and 35048 transitions. [2023-12-02 17:59:04,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 22908 states and 35048 transitions. [2023-12-02 17:59:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-12-02 17:59:04,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:04,492 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:59:04,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:59:04,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -317993117, now seen corresponding path program 1 times [2023-12-02 17:59:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618378090] [2023-12-02 17:59:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2023-12-02 17:59:05,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618378090] [2023-12-02 17:59:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618378090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:59:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30591454] [2023-12-02 17:59:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:05,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:05,813 INFO L87 Difference]: Start difference. First operand 22908 states and 35048 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:08,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:16,807 INFO L93 Difference]: Finished difference Result 91274 states and 143109 transitions. [2023-12-02 17:59:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 601 [2023-12-02 17:59:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:17,157 INFO L225 Difference]: With dead ends: 91274 [2023-12-02 17:59:17,157 INFO L226 Difference]: Without dead ends: 68472 [2023-12-02 17:59:17,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:17,233 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 3999 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:17,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3999 Valid, 6483 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 17:59:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68472 states. [2023-12-02 17:59:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68472 to 68454. [2023-12-02 17:59:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68454 states, 43473 states have (on average 1.403468819727187) internal successors, (61013), 46852 states have internal predecessors, (61013), 19901 states have call successors, (19901), 5080 states have call predecessors, (19901), 5079 states have return successors, (27236), 18793 states have call predecessors, (27236), 19900 states have call successors, (27236) [2023-12-02 17:59:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68454 states to 68454 states and 108150 transitions. [2023-12-02 17:59:21,180 INFO L78 Accepts]: Start accepts. Automaton has 68454 states and 108150 transitions. Word has length 601 [2023-12-02 17:59:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:21,181 INFO L495 AbstractCegarLoop]: Abstraction has 68454 states and 108150 transitions. [2023-12-02 17:59:21,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 68454 states and 108150 transitions. [2023-12-02 17:59:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-02 17:59:21,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:21,190 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:59:21,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:59:21,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash 163647829, now seen corresponding path program 1 times [2023-12-02 17:59:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:21,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631467229] [2023-12-02 17:59:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2023-12-02 17:59:22,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631467229] [2023-12-02 17:59:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631467229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:22,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:22,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:59:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905110946] [2023-12-02 17:59:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:22,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:22,662 INFO L87 Difference]: Start difference. First operand 68454 states and 108150 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:24,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:39,219 INFO L93 Difference]: Finished difference Result 271801 states and 444741 transitions. [2023-12-02 17:59:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 602 [2023-12-02 17:59:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:40,724 INFO L225 Difference]: With dead ends: 271801 [2023-12-02 17:59:40,724 INFO L226 Difference]: Without dead ends: 203453 [2023-12-02 17:59:41,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:41,010 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 3998 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3998 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:41,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3998 Valid, 6527 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 17:59:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203453 states. [2023-12-02 17:59:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203453 to 203327. [2023-12-02 17:59:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203327 states, 129225 states have (on average 1.4033275295028051) internal successors, (181345), 139270 states have internal predecessors, (181345), 58979 states have call successors, (58979), 15095 states have call predecessors, (58979), 15122 states have return successors, (96060), 55725 states have call predecessors, (96060), 58978 states have call successors, (96060) [2023-12-02 17:59:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203327 states to 203327 states and 336384 transitions. [2023-12-02 17:59:52,508 INFO L78 Accepts]: Start accepts. Automaton has 203327 states and 336384 transitions. Word has length 602 [2023-12-02 17:59:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:52,509 INFO L495 AbstractCegarLoop]: Abstraction has 203327 states and 336384 transitions. [2023-12-02 17:59:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 17:59:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 203327 states and 336384 transitions. [2023-12-02 17:59:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2023-12-02 17:59:52,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:52,535 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:52,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:59:52,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:59:52,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash 291906499, now seen corresponding path program 1 times [2023-12-02 17:59:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:52,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239877431] [2023-12-02 17:59:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7974 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2023-12-02 17:59:54,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239877431] [2023-12-02 17:59:54,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239877431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:54,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:54,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027249384] [2023-12-02 17:59:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:59:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:59:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:59:54,362 INFO L87 Difference]: Start difference. First operand 203327 states and 336384 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-02 18:00:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:06,343 INFO L93 Difference]: Finished difference Result 406467 states and 672530 transitions. [2023-12-02 18:00:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:00:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 645 [2023-12-02 18:00:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:07,404 INFO L225 Difference]: With dead ends: 406467 [2023-12-02 18:00:07,404 INFO L226 Difference]: Without dead ends: 203246 [2023-12-02 18:00:08,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:00:08,159 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 2087 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:08,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 1908 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 18:00:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203246 states. [2023-12-02 18:00:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203246 to 203246. [2023-12-02 18:00:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203246 states, 129144 states have (on average 1.4023260856098618) internal successors, (181102), 139189 states have internal predecessors, (181102), 58979 states have call successors, (58979), 15095 states have call predecessors, (58979), 15122 states have return successors, (96060), 55725 states have call predecessors, (96060), 58978 states have call successors, (96060) [2023-12-02 18:00:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203246 states to 203246 states and 336141 transitions. [2023-12-02 18:00:21,001 INFO L78 Accepts]: Start accepts. Automaton has 203246 states and 336141 transitions. Word has length 645 [2023-12-02 18:00:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:21,002 INFO L495 AbstractCegarLoop]: Abstraction has 203246 states and 336141 transitions. [2023-12-02 18:00:21,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-02 18:00:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 203246 states and 336141 transitions. [2023-12-02 18:00:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-12-02 18:00:21,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:21,011 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:00:21,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:00:21,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 752192083, now seen corresponding path program 1 times [2023-12-02 18:00:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:21,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073664512] [2023-12-02 18:00:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10525 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10521 trivial. 0 not checked. [2023-12-02 18:00:22,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073664512] [2023-12-02 18:00:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073664512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:00:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:00:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:00:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040731670] [2023-12-02 18:00:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:00:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:00:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:00:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:00:22,794 INFO L87 Difference]: Start difference. First operand 203246 states and 336141 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-02 18:00:24,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:40,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:51,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:53,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:55,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:57,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:01,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:03,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:05,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:07,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:08,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:20,703 INFO L93 Difference]: Finished difference Result 604525 states and 1000422 transitions. [2023-12-02 18:01:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:01:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 673 [2023-12-02 18:01:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:23,360 INFO L225 Difference]: With dead ends: 604525 [2023-12-02 18:01:23,360 INFO L226 Difference]: Without dead ends: 401385 [2023-12-02 18:01:24,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:01:24,522 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2634 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 7406 mSolverCounterSat, 974 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 8387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 7406 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:24,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 1497 Invalid, 8387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 7406 Invalid, 7 Unknown, 0 Unchecked, 38.5s Time] [2023-12-02 18:01:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401385 states. [2023-12-02 18:01:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401385 to 401382. [2023-12-02 18:01:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401382 states, 255190 states have (on average 1.4031035698891023) internal successors, (358058), 275323 states have internal predecessors, (358058), 116247 states have call successors, (116247), 29757 states have call predecessors, (116247), 29944 states have return successors, (189807), 109787 states have call predecessors, (189807), 116246 states have call successors, (189807) [2023-12-02 18:01:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401382 states to 401382 states and 664112 transitions. [2023-12-02 18:01:51,869 INFO L78 Accepts]: Start accepts. Automaton has 401382 states and 664112 transitions. Word has length 673 [2023-12-02 18:01:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:51,869 INFO L495 AbstractCegarLoop]: Abstraction has 401382 states and 664112 transitions. [2023-12-02 18:01:51,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-02 18:01:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 401382 states and 664112 transitions. [2023-12-02 18:01:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-02 18:01:51,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:51,881 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:51,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:01:51,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:51,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 119340939, now seen corresponding path program 1 times [2023-12-02 18:01:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744468556] [2023-12-02 18:01:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10525 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10522 trivial. 0 not checked. [2023-12-02 18:01:53,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744468556] [2023-12-02 18:01:53,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744468556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:01:53,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111740814] [2023-12-02 18:01:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:53,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:53,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:53,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:53,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2bc30c-14ef-49a8-81f1-914f8953b379/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:01:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:55,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 8678 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:55,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10525 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10521 trivial. 0 not checked. [2023-12-02 18:01:55,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111740814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:55,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:01:55,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 18:01:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008046696] [2023-12-02 18:01:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:01:55,402 INFO L87 Difference]: Start difference. First operand 401382 states and 664112 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-02 18:01:57,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:00,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:27,260 INFO L93 Difference]: Finished difference Result 803621 states and 1405556 transitions. [2023-12-02 18:02:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:02:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 678 [2023-12-02 18:02:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:29,899 INFO L225 Difference]: With dead ends: 803621 [2023-12-02 18:02:29,899 INFO L226 Difference]: Without dead ends: 401703 [2023-12-02 18:02:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:02:32,287 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 0 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5685 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 577 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 18:02:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401703 states.